Jian-Wei Pan
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View article: Memory-Assisted Nonlocal Interferometer Towards Long-Baseline Telescopes
Memory-Assisted Nonlocal Interferometer Towards Long-Baseline Telescopes Open
Quantum networks and remote quantum entanglement serve as vital future quantum communication resources with broad applicability. A key direction lies in extending the baseline of optical interferometers to enhance angular resolution in int…
View article: Wide-Spectrum Security of Quantum Key Distribution
Wide-Spectrum Security of Quantum Key Distribution Open
Implementations of quantum key distribution (QKD) need vulnerability assessment against loopholes in their optical scheme. Most of the optical attacks involve injecting or receiving extraneous light via the communication channel. An eavesd…
View article: Unconditional quantum teleportational advantage of single photons
Unconditional quantum teleportational advantage of single photons Open
Photon loss is the biggest enemy in quantum communications. Direct transmission typically results in a small fraction of photons surviving over long distances, hindering advanced applications such as loophole-free Bell tests and device-ind…
View article: 10-21-Level optical frequency dissemination over 2067 km of noise-loaded fiber network
10-21-Level optical frequency dissemination over 2067 km of noise-loaded fiber network Open
Achieving ultra-stable optical frequency dissemination over long-haul fiber networks is essential for numerous applications. Although optical frequency transfer systems based on optical phase-locked loops (OPLLs) have achieved unprecedente…
View article: Experimental Quantum Channel Purification
Experimental Quantum Channel Purification Open
Quantum networks, which integrate multiple quantum computers and the channels connecting them, are crucial for distributed quantum information processing but remain inherently susceptible to channel noise. Channel purification emerges as a…
View article: Robust quantum computational advantage with programmable 3050-photon Gaussian boson sampling
Robust quantum computational advantage with programmable 3050-photon Gaussian boson sampling Open
The creation of large-scale, high-fidelity quantum computers is not only a fundamental scientific endeavour in itself, but also provides increasingly robust proofs of quantum computational advantage (QCA) in the presence of unavoidable noi…
View article: A zero-dead-time strontium lattice clock with a stability at $10^{-19}$ level
A zero-dead-time strontium lattice clock with a stability at $10^{-19}$ level Open
Optical atomic clocks play a crucial role in fundamental physics, relativistic geodesy, and the future redefinition of the SI second. Standard operation relies on cyclic interrogation sequences, which alternate between atomic interrogation…
View article: Improved systematic evaluation of a strontium optical clock with uncertainty below $1\times 10^{-18}$
Improved systematic evaluation of a strontium optical clock with uncertainty below $1\times 10^{-18}$ Open
We report a systematic uncertainty of $9.2\times 10^{-19}$ for the USTC Sr1 optical lattice clock, achieving accuracy at the level required for the roadmap of the redefinition of the SI second. A finite-element model with {\it in situ}-val…
View article: Real-time vacuum-state quantum random number generator on a chip
Real-time vacuum-state quantum random number generator on a chip Open
Quantum random number generators (QRNGs) produce true random numbers, which are guaranteed by the fundamental principles of quantum physics. Miniaturization of QRNGs is crucial for a wide range of communication and cryptography application…
View article: Directly observing relativistic Bohmian mechanics
Directly observing relativistic Bohmian mechanics Open
Bohmian mechanics, also referred to as the de Broglie-Bohm pilot-wave theory, represents a deterministic and nonlocal interpretation of quantum mechanics. Since its origination in 1927, despite many attempts, reconciling it with relativist…
View article: An Orbit-qubit Quantum Processor of Ultracold Atoms
An Orbit-qubit Quantum Processor of Ultracold Atoms Open
It is challenging to build scalable quantum processors capable of both parallel control and local operation. As a promising platform to overcome this challenge, optical lattices offer exceptional parallelism. However, it has been strugglin…
View article: Realization of an untrusted intermediate relay architecture using a quantum dot single-photon source
Realization of an untrusted intermediate relay architecture using a quantum dot single-photon source Open
View article: Absolute ranging over 113 km with nanometer precision
Absolute ranging over 113 km with nanometer precision Open
Accurate long-distance ranging is crucial for diverse applications, including satellite formation flying, very-long-baseline interferometry, gravitational-wave observations, geographical research, etc. The integration of the time-of-flight…
View article: Electrically pumped ultrabright entangled photons on chip
Electrically pumped ultrabright entangled photons on chip Open
Entangled photon sources (EPS) are essential for quantum science and technology. Despite advancements in integrated optical platforms like thin-film lithium niobate, a scalable, high-performance, chip-scale EPS has remained elusive. We add…
View article: Silicon single-photon detector achieving over 84% photon detection efficiency with flexible operation modes
Silicon single-photon detector achieving over 84% photon detection efficiency with flexible operation modes Open
Silicon single-photon detectors (Si SPDs) play a crucial role in detecting single photons in the visible spectrum. For various applications, photon detection efficiency (PDE) is the most critical characteristic for effectively collecting p…
View article: Transportable single-crystal silicon ultra-stable cavity toward space applications
Transportable single-crystal silicon ultra-stable cavity toward space applications Open
Ultra-stable lasers with extremely low-frequency noise are essential for space-based precision metrology. Transportable single-crystal silicon optical reference cavities offer lower thermal noise floors in compact volumes, making them idea…
View article: Longitudinal and Nonlinear Coupling for High-Fidelity Readout of a Superconducting Qubit
Longitudinal and Nonlinear Coupling for High-Fidelity Readout of a Superconducting Qubit Open
Despite the significant progress in superconducting quantum computation over the past years, quantum state measurement still lags nearly an order of magnitude behind quantum gate operations in speed and fidelity. The main challenge is that…
View article: Enhanced Image Recognition Using Gaussian Boson Sampling
Enhanced Image Recognition Using Gaussian Boson Sampling Open
Gaussian boson sampling (GBS) has emerged as a promising quantum computing paradigm, demonstrating its potential in various applications. However, most existing works focus on theoretical aspects or simple tasks, with limited exploration o…
View article: Ultrabright Entanglement Based Quantum Key Distribution over a 404 km Optical Fiber
Ultrabright Entanglement Based Quantum Key Distribution over a 404 km Optical Fiber Open
Entangled photons are crucial resources for quantum information processing. Here, we present an ultrabright polarization-entangled photon source based on a periodically poled lithium niobate waveguide designed for practical quantum communi…
View article: Interplay of quantum resources in nonlocality tests
Interplay of quantum resources in nonlocality tests Open
Nonlocality, evidenced by the violation of Bell inequalities, not only signifies entanglement but also highlights measurement incompatibility in quantum systems. Utilizing the tilted Clauser-Horne-Shimony-Holt (CHSH) Bell inequality, our h…
View article: Human Neural Progenitor Cell-Derived Exosomes Deliver miR- 100 - 5p Targeting NOX4 mRNA to Alleviate Oxidative Stress in Acute Ischemia Injury
Human Neural Progenitor Cell-Derived Exosomes Deliver miR- 100 - 5p Targeting NOX4 mRNA to Alleviate Oxidative Stress in Acute Ischemia Injury Open
View article: Low-overhead defect-adaptive surface code with bandage-like super-stabilizers
Low-overhead defect-adaptive surface code with bandage-like super-stabilizers Open
To make practical quantum algorithms work, large-scale quantum processors protected by error-correcting codes are required to resist noise and ensure reliable computational outcomes. However, a major challenge arises from defects in proces…
View article: Active Optical Intensity Interferometry
Active Optical Intensity Interferometry Open
Long baseline diffraction-limited optical aperture synthesis technology by interferometry plays an important role in scientific study and practical application. In contrast to amplitude (phase) interferometry, intensity interferometry-whic…
View article: Enhanced timing of a 113 km O-TWTFT link with digital maximum likelihood estimation process
Enhanced timing of a 113 km O-TWTFT link with digital maximum likelihood estimation process Open
Optical two-way time-frequency transfer (O-TWTFT), employing linear optical sampling and based on frequency combs, is a promising approach for future large-scale optical clock synchronization. It offers the dual benefits of high temporal r…
View article: Deterministic resonance fluorescence improvement of single quantum dots by optimized surface passivation
Deterministic resonance fluorescence improvement of single quantum dots by optimized surface passivation Open
The degradation caused by surface states restricts the performance of near-surface semiconductor quantum dots (QDs). Here, we demonstrate optimized passivation techniques to improve the resonance fluorescence (RF) with dot-to-dot compariso…
View article: Turning rough surfaces into non-line-of-sight cameras
Turning rough surfaces into non-line-of-sight cameras Open
Overcoming the spatial mixing of reflection and scattering from rough surfaces to see a hidden scene is a difficult challenge with a wide range of applications. Existing methods counter the mixing effect using active time-of-flight or cohe…
View article: Microsatellite-based real-time quantum key distribution
Microsatellite-based real-time quantum key distribution Open
View article: Quantum technologies need big investments to deliver on their big promises
Quantum technologies need big investments to deliver on their big promises Open
View article: Calibrating quantum gates up to 52 qubits in a superconducting processor
Calibrating quantum gates up to 52 qubits in a superconducting processor Open
View article: Feshbach spectroscopy of ultracold mixtures of $^{6}{\rm Li}$ and $^{164}{\rm Dy}$ atoms
Feshbach spectroscopy of ultracold mixtures of $^{6}{\rm Li}$ and $^{164}{\rm Dy}$ atoms Open
We report on the observation of Feshbach resonances in ultracold $^6\mathrm{Li}$-$^{164}\mathrm{Dy}$ mixtures, where $^6\mathrm{Li}$ atoms are respectively prepared in their three lowest spin states, and $^{164}\mathrm{Dy}$ atoms are prepa…