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| Open AccessProbing single electrons across 300-mm spin qubit wafers
Using a cryogenic 300-mm wafer prober, a new approach for the testing of hundreds of industry-manufactured spin qubit devices at 1.6 K provides high-volume data on performance, allowing optimization of the complementary metal–oxide–semiconductor (CMOS)-compatible fabrication process.
- Samuel Neyens
- , Otto K. Zietz
- & James S. Clarke
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Article
| Open AccessMulti-project wafers for flexible thin-film electronics by independent foundries
The iconic 6502 microprocessor designed in two key thin-film transistor technologies by independent foundries is used to demonstrate and expand the multi-project wafer approach for flexible electronics.
- Hikmet Çeliker
- , Wim Dehaene
- & Kris Myny
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Analysis
| Open AccessA figure of merit for efficiency roll-off in TADF-based organic LEDs
Efficiency roll-off in a wide range of TADF OLEDs is analysed and a figure of merit proposed for materials design to improve efficiency at high brightness, potentially expanding the range of applications of TADF materials.
- S. Diesing
- , L. Zhang
- & I. D. W. Samuel
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All-electrical skyrmionic magnetic tunnel junction
Wafer-scale realization of a nanoscale magnetic tunnel junction hosting a single, ambient skyrmion enables its large readout, efficient switching, and compatibility with lateral manipulation, and thereby provides the backbone for all-electrical skyrmionic device architectures.
- Shaohai Chen
- , James Lourembam
- & Anjan Soumyanarayanan
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Ultra-compact quasi-true time delay for boosting wireless channel capacity
A quasi-true time delay is demonstrated for a microwave device implemented in a CMOS technology to miniaturize true-time-delay components of beam-steering systems, addressing the fundamental channel-capacity limitations and increasing data transmission in wireless communications.
- Bala Govind
- , Thomas Tapen
- & Alyssa Apsel
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Article
| Open AccessRoom-temperature quantum optomechanics using an ultralow noise cavity
A room-temperature demonstration of optomechanical squeezing of light and measurement of mechanical motion approaching the Heisenberg limit using a phononic-engineered membrane-in-the-middle cavity with ultralow noise.
- Guanhao Huang
- , Alberto Beccari
- & Tobias J. Kippenberg
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Stable blue phosphorescent organic LEDs that use polariton-enhanced Purcell effects
Polariton-enhanced Purcell effects can be used to reduce the triplet density in blue phosphorescent organic light-emitting diodes, thereby extending their operational lifetimes by decreasing the annihilation of high-energy, long-lived blue triplets.
- Haonan Zhao
- , Claire E. Arneson
- & Stephen R. Forrest
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Evidence for chiral supercurrent in quantum Hall Josephson junctions
Ultra-narrow quantum Hall Josephson junctions defined in encapsulated graphene nanoribbons exhibit a chiral supercurrent, visible up to 8 T.
- Hadrien Vignaud
- , David Perconte
- & Benjamin Sacépé
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Aspartate all-in-one doping strategy enables efficient all-perovskite tandems
AspCl doping in Sn–Pb perovskite solar cells improves their performance and stability.
- Shun Zhou
- , Shiqiang Fu
- & Weijun Ke
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Coherent nanophotonic electron accelerator
A scalable nanophotonic electron accelerator with a high particle acceleration gradient and good beam confinement achieves an energy gain of 43%.
- Tomáš Chlouba
- , Roy Shiloh
- & Peter Hommelhoff
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Single-electron spin resonance detection by microwave photon counting
Spectroscopic measurements of individual rare-earth ion electron spins are performed by detecting their microwave fluorescence, with the method coming close to practical single-electron spin resonance at millikelvin temperatures.
- Z. Wang
- , L. Balembois
- & E. Flurin
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Article
| Open AccessHigh-brightness scalable continuous-wave single-mode photonic-crystal laser
We developed large-scale photonic-crystal surface-emitting lasers with controlled Hermitian and non-Hermitian couplings inside the photonic crystal and a pre-installed spatial distribution of the lattice constant, which leads to the realization of a continuous-wave brightness of 1 GW cm−2 sr−1.
- Masahiro Yoshida
- , Shumpei Katsuno
- & Susumu Noda
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Article
| Open AccessLoophole-free Bell inequality violation with superconducting circuits
A loophole-free violation of Bell’s inequality with superconducting circuits shows that non-locality is a viable new resource in quantum information technology realized with superconducting circuits, promising many potential applications.
- Simon Storz
- , Josua Schär
- & Andreas Wallraff
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Electronic metadevices for terahertz applications
Through microscopic manipulation of radiofrequency fields, a new class of compact terahertz devices is proposed, setting the stage for next-generation ultrafast semiconductor electronics.
- Mohammad Samizadeh Nikoo
- & Elison Matioli
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| Open AccessVertical organic electrochemical transistors for complementary circuits
Vertical organic electrochemical transistors demonstrating unprecedented performances in both p- and n-type operation modes have been synthesized from new electro-active and ion-permeable semiconducting polymers by the interface engineering of electro-active blend layers.
- Wei Huang
- , Jianhua Chen
- & Antonio Facchetti
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Topological lattices realized in superconducting circuit optomechanics
Optomechanical lattices in one and two dimensions with exceptionally low disorder are realized, showing how the optomechanical interaction can be exploited for direct measurements of the Hamiltonian, beyond the tight-binding approximation.
- Amir Youssefi
- , Shingo Kono
- & Tobias J. Kippenberg
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Disorder-assisted assembly of strongly correlated fluids of light
Using particle-by-particle assembly and adiabatic manipulation of disorder, low-entropy, strongly correlated quantum fluids of light are constructed, opening up new possibilities for the preparation of exotic phases of synthetic matter.
- Brendan Saxberg
- , Andrei Vrajitoarea
- & David I. Schuster
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Regulating surface potential maximizes voltage in all-perovskite tandems
Because open-circuit voltage deficit is greater in wide-bandgap perovskite solar cells, the authors introduce diammonium molecules to modify perovskite surface states and achieve a more uniform spatial distribution of surface potential, enabling record voltage all-perovskite tandem solar cells.
- Hao Chen
- , Aidan Maxwell
- & Edward H. Sargent
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Cumulative polarization in conductive interfacial ferroelectrics
Surface potential measurements of parallel WSe2 and MoS2 multi-layers with aligned and anti-aligned configurations of the polar interfaces were conducted showing evenly spaced, nearly decoupled potential steps, indicative of highly confined interfacial electric fields.
- Swarup Deb
- , Wei Cao
- & Moshe Ben Shalom
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Topological Chern vectors in three-dimensional photonic crystals
Magnetically tunable three-dimensional photonic crystals are used to achieve the experimental demonstration of Chern vectors and their topological surface states, showing the Chern vector to be an intrinsic bulk topological invariant in three-dimensional topological materials.
- Gui-Geng Liu
- , Zhen Gao
- & Baile Zhang
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A solution-processed n-type conducting polymer with ultrahigh conductivity
A reaction is described combining oxidative polymerization and in situ reductive n-doping to yield poly(benzodifurandione), a facilely synthesized stable n-type conducting polymer with ultrahigh conductivity, with applications in organic electronics.
- Haoran Tang
- , Yuanying Liang
- & Fei Huang
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Exceptional-point-based accelerometers with enhanced signal-to-noise ratio
Experiments and theory show that transmission peak degeneracies near exceptional points in an electromechanical accelerometer can be used to improve the signal-to-noise ratio of the sensor.
- Rodion Kononchuk
- , Jizhe Cai
- & Tsampikos Kottos
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Optical observation of single spins in silicon
Individually addressable ‘T centre’ photon-spin qubits are integrated in silicon photonic structures and their spin-dependent telecommunications-band optical transitions characterized, creating opportunities to construct silicon-integrated, telecommunications-band quantum information networks.
- Daniel B. Higginbottom
- , Alexander T. K. Kurkjian
- & Stephanie Simmons
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Measuring the knot of non-Hermitian degeneracies and non-commuting braids
Control loops generically produce braids of eigenfrequencies, and these braids form a non-Abelian group that reflects the non-trivial geometry of the space of degeneracies; these features are demonstrated experimentally using a cavity optomechanical system.
- Yogesh S. S. Patil
- , Judith Höller
- & Jack G. E. Harris
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Scalable single-mode surface-emitting laser via open-Dirac singularities
A photonic crystal cavity arranged in a hexagonal pattern shows unconventional losses that allow single-mode lasing operation to be maintained as the cavity is scaled up in size.
- Rushin Contractor
- , Wanwoo Noh
- & Boubacar Kanté
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| Open AccessOrganic bipolar transistors
An organic bipolar junction transistor composed of highly crystalline rubrene thin films has a device architecture that could be used in organic electronics with greatly improved high-frequency performance
- Shu-Jen Wang
- , Michael Sawatzki
- & Karl Leo
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Non-Hermitian chiral phononics through optomechanically induced squeezing
Time-reversal symmetry breaking is combined with non-Hermitian dynamics in an optomechanical system with squeezing interactions to produce chirality in the system, and a non-Hermitian Aharonov–Bohm effect is observed.
- Javier del Pino
- , Jesse J. Slim
- & Ewold Verhagen
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Electrically tunable quantum confinement of neutral excitons
Electrically controlled quantum confinement of excitons to below 10 nm is achieved in a 2D semiconductor by combining in-plane electric fields with interactions between excitons and free charges.
- Deepankur Thureja
- , Atac Imamoglu
- & Puneet A. Murthy
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Polariton Bose–Einstein condensate from a bound state in the continuum
Using a patterned waveguide, a Bose–Einstein condensate of polaritons is realized in a bound state in the continuum, with a low condensation threshold density that occurs at a dispersion saddle point.
- V. Ardizzone
- , F. Riminucci
- & D. Sanvitto
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Observation of chiral state transfer without encircling an exceptional point
A study realizes a photonic emulator to probe the temporal evolution of light in a non-Hermitian system, and reports the observation of chiral state transfer without encircling an exceptional point.
- Hadiseh Nasari
- , Gisela Lopez-Galmiche
- & Mercedeh Khajavikhan
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Quantum state preparation and tomography of entangled mechanical resonators
Piezoelectric coupling of a single superconducting qubit to two phononic crystal nanoresonators results in an integrated device that is able to control and read out the quantum state of the two mechanical resonators.
- E. Alex Wollack
- , Agnetta Y. Cleland
- & Amir H. Safavi-Naeini
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High-brightness all-polymer stretchable LED with charge-trapping dilution
A material design strategy and fabrication process is described to produce all-polymer light-emitting diodes with high brightness, current efficiency and good mechanical stability, with applications in skin electronics and human–machine interfaces.
- Zhitao Zhang
- , Weichen Wang
- & Zhenan Bao
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Steady Floquet–Andreev states in graphene Josephson junctions
Using continuous microwave application without substantial heating, Floquet–Andreev states in graphene Josephson junctions are realized, and their energy spectra are measured directly by superconducting tunnelling spectroscopy.
- Sein Park
- , Wonjun Lee
- & Gil-Ho Lee
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Single fibre enables acoustic fabrics via nanometre-scale vibrations
A piezoelectric fibre woven into a machine-washable fabric converts tenuous sound pressure into electric signals and is used to listen to cardiac sound, determine the source direction of a sound, and record and play back audio.
- Wei Yan
- , Grace Noel
- & Yoel Fink
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Detecting spins by their fluorescence with a microwave photon counter
An ensemble of electron spins is detected by their microwave fluorescence using a superconducting single microwave photon counter, making single-spin electron spin resonance spectroscopy a possible future prospect.
- Emanuele Albertinale
- , Léo Balembois
- & Emmanuel Flurin
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Approaching the intrinsic exciton physics limit in two-dimensional semiconductor diodes
Two-dimensional transition metal dichalcogenide diodes with defect-free van der Waals contacts allows minimization of the extrinsic interfacial disorder-dominated recombination and access to the intrinsic excitonic behaviour in two-dimensional semiconductor devices.
- Peng Chen
- , Timothy L. Atallah
- & Xiangfeng Duan
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Article
| Open AccessSuperior robustness of anomalous non-reciprocal topological edge states
The physics of oriented topological graphs produces anomalous non-reciprocal topological edge states that have greater robustness to disorder and defects than the best performers at present: namely, Chern states.
- Zhe Zhang
- , Pierre Delplace
- & Romain Fleury
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Single-photon nonlinearity at room temperature
Nonlinearity induced by a single photon is desirable because it can drive power consumption of optical devices to their fundamental quantum limit, and is demonstrated here at room temperature.
- Anton V. Zasedatelev
- , Anton V. Baranikov
- & Pavlos G. Lagoudakis
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Electron phase-space control in photonic chip-based particle acceleration
In a tiny chip-based particle accelerator, phase-space control of the emerging electron beam demonstrates guiding over a length of nearly 80 micrometres and an indispensable prerequisite to electron acceleration to high energies.
- R. Shiloh
- , J. Illmer
- & P. Hommelhoff
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Half- and quarter-metals in rhombohedral trilayer graphene
A study shows that rhombohedral graphene is an ideal platform for well-controlled tests of many-body theory and reveals that magnetism in moiré materials is fundamentally itinerant in nature.
- Haoxin Zhou
- , Tian Xie
- & Andrea F. Young
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Decision trees within a molecular memristor
Multiple redox transitions in a molecular memristor can be harnessed as ‘decision trees’ to undertake complex and reconfigurable logic operations in a single time step.
- Sreetosh Goswami
- , Rajib Pramanick
- & R. Stanley Williams
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A natively flexible 32-bit Arm microprocessor
Flexible electronic platforms would enable the integration of functional electronic circuitry with many everyday objects; here, a low-cost and fully flexible 32-bit microprocessor is produced.
- John Biggs
- , James Myers
- & Scott White
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Quantum control of a nanoparticle optically levitated in cryogenic free space
Quantum control of an optically levitated nanoparticle with a mass of just one femtogram is demonstrated in a cryogenic environment by feedback-cooling the motion of the particle to the quantum ground state.
- Felix Tebbenjohanns
- , M. Luisa Mattana
- & Lukas Novotny
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Fizeau drag in graphene plasmonics
Direct infrared nano-imaging of plasmonic waves in graphene carrying high current density reveals the Fizeau drag of plasmon polaritons by fast-moving quasi-relativistic electrons.
- Y. Dong
- , L. Xiong
- & D. N. Basov
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Control and readout of a superconducting qubit using a photonic link
High-fidelity control and readout of a superconducting qubit is performed with a low-noise optical fibre link that delivers microwave signals directly to the millikelvin quantum computing environment.
- F. Lecocq
- , F. Quinlan
- & J. D. Teufel
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Large-area display textiles integrated with functional systems
A large electronic display textile that is flexible, breathable and withstands repeated machine-washing is integrated with a keyboard and power supply to create a wearable, durable communication tool.
- Xiang Shi
- , Yong Zuo
- & Huisheng Peng
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Quantum circuits with many photons on a programmable nanophotonic chip
A system for realizing many-photon quantum circuits is presented, comprising a programmable nanophotonic chip operating at room temperature, interfaced with a fully automated control system.
- J. M. Arrazola
- , V. Bergholm
- & Y. Zhang
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Experimental demonstration of the mechanism of steady-state microbunching
The mechanism of steady-state electron microbunching is demonstrated, providing a basis that will enable its full implementation in electron storage rings to generate high-repetition, high-power coherent radiation.
- Xiujie Deng
- , Alexander Chao
- & Lixin Yan
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Protecting a bosonic qubit with autonomous quantum error correction
A logical qubit encoded in multi-photon states of a superconducting cavity is protected with autonomous correction of certain quantum errors by tailoring the dissipation it is exposed to.
- Jeffrey M. Gertler
- , Brian Baker
- & Chen Wang