38 Result(s)
within
Jian-Wei Pan
Quantum Physics
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Article
Open Access1002 km twin-field quantum key distribution with finite-key analysis
Quantum key distribution (QKD) holds the potential to establish secure keys over long distances. The distance of point-to-point QKD secure key distribution is primarily impeded by the transmission loss inheren...
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High-rate quantum key distribution exceeding 110 Mb s–1
Quantum key distribution (QKD) can provide fundamentally proven secure communication. Towards application, the secret key rate (SKR) is a key figure of merit for any QKD system. The SKR has so far been limited...
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Open AccessQuantum frequency conversion and single-photon detection with lithium niobate nanophotonic chips
The lithium niobate on insulator (LNOI) platform has revolutionized lithium niobate materials, and a series of quantum photonic chips have exhibited unprecedented performances. Quantum frequency conversion (QF...
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Sequential generation of multiphoton entanglement with a Rydberg superatom
Multiqubit entanglement is an indispensable resource for quantum information science. In particular, the entanglement of photons is of conceptual interest due to its implications in measurement-based quantum c...
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Open AccessA scheme to create and verify scalable entanglement in optical lattice
To achieve scalable quantum information processing, great efforts have been devoted to the creation of large-scale entangled states in various physical systems. Ultracold atom in optical lattice is considered ...
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Quantum Computational Complexity with Photons and Linear Optics
On this wonderful occasion to celebrate Professor Yang Chen Ning’s 100th birthday, we are deeply honored to contribute a chapter on our recent study on the demonstration of quantum computational advantage, whi...
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Open AccessImplementation of a 46-node quantum metropolitan area network
Quantum key distribution (QKD) enables secure key exchanges between two remote users. The ultimate goal of secure communication is to establish a global quantum network. The existing field tests suggest that q...
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Twin-field quantum key distribution over a 511 km optical fibre linking two distant metropolitan areas
The basic principle of quantum mechanics1 guarantees the unconditional security of quantum key distribution (QKD)2–6 at the cost of forbidding the amplification of a quantum state. As a result, and despite remark...
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Open AccessExperimental authentication of quantum key distribution with post-quantum cryptography
Quantum key distribution (QKD) can provide information theoretically secure key exchange even in the era of quantum computers. However, QKD requires the classical channel to be authenticated, the current metho...
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Distributed quantum phase estimation with entangled photons
Distributed quantum metrology can enhance the sensitivity for sensing spatially distributed parameters beyond the classical limits. Here we demonstrate distributed quantum phase estimation with discrete variab...
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Open AccessVerification of a resetting protocol for an uncontrolled superconducting qubit
Quantum resetting protocols allow a quantum system to be sent to a state in the past by making it interact with quantum probes when neither the free evolution of the system nor the interaction is controlled. W...
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Implementation of quantum key distribution surpassing the linear rate-transmittance bound
Quantum key distribution (QKD)1,2 offers a long-term solution to secure key exchange. Due to photon loss in transmission, it was believed that the repeaterless key rate is bounded by a linear function of the tran...
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Open AccessQuantum random number generation with uncharacterized laser and sunlight
The entropy or randomness source is an essential ingredient in random number generation. Quantum random number generators generally require well modeled and calibrated light sources, such as a laser, to genera...
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Towards optimal single-photon sources from polarized microcavities
An optimal single-photon source should deterministically deliver one, and only one, photon at a time, with no trade-off between the source’s efficiency and the photon indistinguishability. However, all reporte...
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Open AccessExperimental quantum network coding
Distributing quantum state and entanglement between distant nodes is a crucial task in distributed quantum information processing on large-scale quantum networks. Quantum network coding provides an alternative...
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Open AccessRealisation of high-fidelity nonadiabatic CZ gates with superconducting qubits
Entangling gates with error rates reaching the threshold for quantum error correction have been reported for CZ gates using adiabatic longitudinal control based on the interaction between the |11〉 and |20〉 sta...
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Experimental demonstration of non-bilocality with truly independent sources and strict locality constraints
The ongoing interest in creating a secure global quantum network culminated recently in the demonstration of transcontinental quantum communication1. There is a pressing need to examine the properties attached to...
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Experimental quantum repeater without quantum memory
Quantum repeaters—important components of a scalable quantum internet—enable entanglement to be distributed over long distances. The standard paradigm for a quantum repeater relies on the necessary, demanding ...
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Entanglement of three quantum memories via interference of three single photons
Quantum memory networks as an intermediate stage in the development of a quantum internet1 will enable a number of significant applications2-5. To connect and entangle remote quantum memories, it is best to use p...
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Experimental nested purification for a linear optical quantum repeater
Quantum repeaters 1–4 are essential elements for demonstrating global-scale quantum communication. Over the past few decades, tremendous efforts have been dedic...
