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Article
Experimental quantum computational chemistry with optimized unitary coupled cluster ansatz
Quantum computational chemistry has emerged as a potential application of quantum computing. Hybrid quantum-classical computing methods, such as variational quantum eigensolvers, have been designed as promisin...
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Article
Creation of memory–memory entanglement in a metropolitan quantum network
Towards realizing the future quantum internet1,2, a pivotal milestone entails the transition from two-node proof-of-principle experiments conducted in laboratories to comprehensive multi-node set-ups on large sca...
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Article
Observation and quantification of the pseudogap in unitary Fermi gases
The microscopic origin of high-temperature superconductivity in cuprates remains unknown. It is widely believed that substantial progress could be achieved by better understanding of the pseudogap phase, a nor...
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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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Article
Generation of genuine entanglement up to 51 superconducting qubits
Scalable generation of genuine multipartite entanglement with an increasing number of qubits is important for both fundamental interest and practical use in quantum-information technologies1,2. On the one hand, m...
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Article
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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Article
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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Article
Free-space dissemination of time and frequency with 10−19 instability over 113 km
Networks of optical clocks find applications in precise navigation1,2, in efforts to redefine the fundamental unit of the ‘second’3–6 and in gravitational tests7. As the frequency instability for state-of-the-art...
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Article
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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Article
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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Article
The potential and global outlook of integrated photonics for quantum technologies
Integrated quantum photonics uses classical integrated photonic technologies and devices for quantum applications. As in classical photonics, chip-scale integration has become critical for scaling up and trans...
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Article
Evidence for the association of triatomic molecules in ultracold 23Na40K + 40K mixtures
Ultracold assembly of diatomic molecules has enabled great advances in controlled chemistry, ultracold chemical physics and quantum simulation with molecules1–3. Extending the ultracold association to triatomic m...
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Chapter
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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Article
Production of an ultracold mixture of 23Na40K and 40K
We report on the production of an ultracold mixture of 2.8 × 10423Na40K molecules and 3.3 × 10540K atoms at a temperature of about 250 nK. Compared with previous studies, the number of atoms and molecules improve...
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Article
Quantum-dot single-photon sources for the quantum internet
High-performance quantum light sources based on semiconductor quantum dots coupled to microcavities are showing their promise in long-distance solid-state quantum networks.
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Article
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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Article
Realization of a bosonic antiferromagnet
Quantum antiferromagnets are of broad interest in condensed-matter physics as they provide a platform for studying exotic many-body states1 including spin liquids2 and high-temperature superconductors3. Here we r...
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Article
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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Article
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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Article
An association of low high-density lipoprotein levels with recurrence of chronic subdural hematoma
Chronic subdural hematoma (CSDH) is a common illness in neurosurgical practice with a substantial recurrence rate. Previous studies found that serum lipids were associated with the risk of stroke and subarachn...
