Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Generation of large amplitude phonon states in quantum acoustics
C. Potts, W.J.M. Franse, V.A.S.V. Bittencourt +2 more·Dec 21, 2023
The development of quantum acoustics has enabled the cooling of mechanical objects to their quantum ground state, generation of mechanical Fock-states, and Schrödinger cat states. Such demonstrations have made mechanical resonators attractive candida...
Toward coherent quantum computation of scattering amplitudes with a measurement-based photonic quantum processor
R. Briceño, Robert G. Edwards, M. Eaton +3 more·Dec 19, 2023
In recent years, applications of quantum simulation have been developed to study the properties of strongly interacting theories. This has been driven by two factors: on the one hand, needs from theorists to have access to physical observables that a...
Error Correcting States in Ultracold Atoms
Harry C. P. Kendell, Giacaomo Ferranti, Carrie A. Weidner·Dec 12, 2023
We demonstrate a method for encoding Gottesman-Kitaev-Preskill (GKP) error-correcting qubits with single ultracold atoms trapped in individual sites of a deep optical lattice. Using quantum optimal control protocols, we demonstrate the generation of ...
Precise Phase Error Rate Analysis for Quantum Key Distribution with Phase Postselection
Yao Zhou, Zhen-Qiang Yin, Yong-Guang Shan +5 more·Dec 11, 2023
Quantum key distribution (QKD) stands as a pioneering method for establishing information-theoretically secure communication channels by utilizing the principles of quantum mechanics. In the security proof of QKD, the phase error rate serves as a cri...
Dephasing due to electromagnetic interactions in spatial qubits
M. Schut, Herre Bosma, Meng-Zhi Wu +3 more·Dec 9, 2023
Matter-wave interferometers with micro-particles will enable the next generation of quantum sensors to probe minute quantum phase information. Therefore, estimating the loss of coherence and the degree of entanglement degradation for such interferome...
Robust entanglement buffers based on SWAP interactions
Ye-Chao Liu, Otfried Gühne, Stefan Nimmrichter·Dec 8, 2023
Quantum entanglement is the essential resource for quantum communication and distributed information processing in a quantum network. However, the remote generation over a network suffers from inevitable transmission loss and other technical difficul...
Fault-Tolerant One-Way Noiseless Amplification for Microwave Bosonic Quantum Information Processing
Hany Khalifa, Riku Jäntti, G. Paraoanu·Dec 7, 2023
Microwave quantum information networks require reliable transmission of single-photon propagating modes over lossy channels. In this article, we propose a microwave noiseless linear amplifier (NLA) suitable to circumvent the losses incurred by a flyi...
Error correlations in photonic qudit-mediated entanglement generation
Xiaoyu Liu, Niv Bharos, Liubov Markovich +1 more·Dec 3, 2023
Generating entanglement between distributed network nodes is a prerequisite for the quantum internet. Entanglement distribution protocols based on high-dimensional photonic qudits enable the simultaneous generation of multiple entangled pairs, which ...
Co-Designed Superconducting Architecture for Lattice Surgery of Surface Codes with Quantum Interface Routing Card
Charles Guinn, S. Stein, Esin Tureci +5 more·Dec 2, 2023
Facilitating the ability to achieve logical qubit error rates below physical qubit error rates, error correction is anticipated to play an important role in scaling quantum computers. While many algorithms require millions of physical qubits to be ex...
Hybrid III-V/Silicon Quantum Photonic Device Generating Broadband Entangled Photon Pairs
J. Schuhmann, L. Lazzari, M. Morassi +8 more·Nov 21, 2023
The demand for integrated photonic chips combining the generation and manipulation of quantum states of light is steadily increasing, driven by the need for compact and scalable platforms for quantum information technologies. While photonic circuits ...
Deterministic Preparation of Optical Squeezed Cat and Gottesman-Kitaev-Preskill States.
M. Winnel, Joshua J. Guanzon, Deepesh Singh +1 more·Nov 17, 2023
Large-amplitude squeezed cat states and high-quality Gottesman-Kitaev-Preskill (GKP) states are essential for effective quantum error correction, yet their optical preparation has been hindered by challenges such as low success probabilities, small a...
"Nonlocality-of-a-single-photon" based Quantum Key Distribution and Random Number Generation schemes and their device-independent security analysis
Konrad Schlichtholz, Bianka Woloncewicz, Tamoghna Das +2 more·Nov 13, 2023
The question of ``non-locality of a single photon'', which started with a paper by Tan, Walls and Collett (TWC, 1991) stirred a thirty years long debate. This hampered attempts to use the TWC interferometric scheme in quantum cryptography. The scheme...
Optical Nanofiber Testbeds for Benchmarking Membrane-Waveguide Photonic Integrated Circuit Platforms toward On-Chip Quantum Inertial Sensing
Adrian Orozco, William Kindel, Nicholas Karl +4 more·Nov 13, 2023
Recent advances in cold atom interferometry with optical and magnetic atom guides have set the stage for quantum inertial sensors capable of operating in dynamic environments. In this work, we present three key innovations, such as evanescent-field (...
Building Trust in the Quantum Cloud with Physical Unclonable Functions
Behnam Tonekaboni, P. Gokhale, Kaitlin N. Smith·Nov 13, 2023
As cloud-based quantum computing expands, securing access to quantum hardware is increasingly critical. We present an authentication protocol that leverages intrinsic quantum device properties to construct Quantum Physical Unclonable Functions (Q-PUF...
Sparse Quantum State Preparation for Strongly Correlated Systems.
C'esar Feniou, Olivier Adjoua, Baptiste Claudon +3 more·Nov 6, 2023
Quantum computing allows, in principle, the encoding of the exponentially scaling many-electron wave function onto a linearly scaling qubit register, offering a promising solution to overcome the limitations of traditional quantum chemistry methods. ...
Echo-evolution data generation for quantum error mitigation via neural networks
Danila Babukhin·Nov 1, 2023
Neural networks provide a prospective tool for error mitigation in quantum simulation of physical systems. However, we need both noisy and noise-free data to train neural networks to mitigate errors in quantum computing results. Here, we propose a ph...
Linear-nonlinear duality for circuit design on quantum computing platforms
William E. Salazar, Omar Calderón-Losada, John H. Reina·Oct 31, 2023
Beam splitters (BSs) and optical parametric amplifiers (OPAs) can be described using Lie groups $SU(2)$ and $SU(1,1)$. Here, we show that the dynamical trajectories of these devices are connected via a Wick rotation on their respective group manifold...
Remote-Entanglement Protocols for Stationary Qubits with Photonic Interfaces
H. Beukers, M. Pasini, Hyeongrak Choi +3 more·Oct 30, 2023
Generating entanglement between distant quantum systems is at the core of quantum networking. In recent years, numerous theoretical protocols for remote entanglement generation have been proposed, of which many have been experimentally realized. Here...
Deterministic photon source of genuine three-qubit entanglement
Yijian Meng, M. L. Chan, Rasmus B Nielsen +10 more·Oct 18, 2023
Deterministic photon sources allow long-term advancements in quantum optics. A single quantum emitter embedded in a photonic resonator or waveguide may be triggered to emit one photon at a time into a desired optical mode. By coherently controlling a...
Heralded Optical Entanglement Generation via the Graph Picture of Linear Quantum Networks
Seungbeom Chin, Marcin Karczewski, Yong-Su Kim·Oct 16, 2023
Non-destructive heralded entanglement with photons is a valuable resource for quantum information processing. However, they generally entail ancillary particles and modes that amplify the circuit intricacy. To address this challenge, a recent work \c...