Papers
Live trends in quantum computing research, updated daily from arXiv.
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28,402
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13,526 papers in 12 months (-19% vs prior quarter)
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Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Experimental Realization of Nonunitary Multiqubit Operations.
M. Mourik, Elias Zapusek, Pavel Hrmo +5 more·Mar 10, 2023
We demonstrate a novel experimental tool set that enables irreversible multiqubit operations on a quantum platform. To exemplify our approach, we realize two elementary nonunitary operations: the or and nor gates. The electronic states of two trapped...
Real Option Pricing using Quantum Computers
Alberto Manzano, Gonzalo Ferro, 'Alvaro Leitao +2 more·Mar 10, 2023
In this work we present an alternative methodology to the standard Quantum Accelerated Monte Carlo (QAMC) applied to derivatives pricing. Our pipeline benefits from the combination of a new encoding protocol, referred to as the direct encoding, and a...
Adaptive quantum error mitigation using pulse-based inverse evolutions
Ivan Henao, Jader P. Santos, R. Uzdin·Mar 9, 2023
Quantum Error Mitigation (QEM) enables the extraction of high-quality results from the presently-available noisy quantum computers. In this approach, the effect of the noise on observables of interest can be mitigated using multiple measurements with...
Closest Lattice Point Decoding for Multimode Gottesman-Kitaev-Preskill Codes
Mao Lin, C. Chamberland, Kyungjoo Noh·Mar 8, 2023
Quantum error correction (QEC) plays an essential role in fault-tolerantly realizing quantum algorithms of practical interest. Among different approaches to QEC, encoding logical quantum information in harmonic oscillator modes has been shown to be p...
Measurement-induced entanglement and teleportation on a noisy quantum processor
Jesse C. Hoke, Matteo Ippoliti, D. Abanin +160 more·Mar 8, 2023
Measurement has a special role in quantum theory^ 1 : by collapsing the wavefunction, it can enable phenomena such as teleportation^ 2 and thereby alter the ‘arrow of time’ that constrains unitary evolution. When integrated in many-body dynamics, mea...
Indefinite causal key distribution
Hector Spencer-Wood·Mar 7, 2023
We propose a quantum key distribution (QKD) protocol that is carried out in an indefinite causal order (ICO). In QKD, one considers a setup in which two parties, Alice and Bob, share a key with one another in such a way that they can detect whether a...
Universal resources for quantum computing
Dongsheng Wang·Mar 7, 2023
Unravelling the source of quantum computing power has been a major goal in the field of quantum information science. In recent years, the quantum resource theory (QRT) has been established to characterize various quantum resources, yet their roles in...
Quantum Computation via Multiport Quantum Fourier Optical Processors
Mohammad Rezai, J. Salehi·Mar 7, 2023
The light's image is the primary source of information carrier in nature. Indeed, a single photon's image possesses a vast information capacity that can be harnessed for quantum information processing. Our scheme for implementing quantum information ...
Variational quantum state discriminator for supervised machine learning
Dongkeun Lee, Kyunghyun Baek, Joonsuk Huh +1 more·Mar 7, 2023
Quantum state discrimination (QSD) is a fundamental task in quantum information processing with numerous applications. We present a variational quantum algorithm that performs the minimum-error QSD, called the variational quantum state discriminator ...
Monolithic Platform for Integrated Quantum Photonics with Hexagonal Boron Nitride
Milad Nonahal, Chi Li, H. Ren +4 more·Mar 6, 2023
Integrated quantum photonics (IQP) provides a path to practical, scalable quantum computation, communications and information processing. Realization of an IQP platform requires integration of quantum emitters with high quality photonic circuits. How...
Deterministic generation of shaped single microwave photons using a parametrically driven coupler
Jiaying Yang, A. Eriksson, M. Aamir +5 more·Mar 6, 2023
A distributed quantum computing system requires a quantum communication channel between spatially separated processing units. In superconducting circuits, such a channel can be realized by using propagating microwave photons to encode and transfer qu...
Decoding the projective transverse field Ising model
Felix Roser, H. Büchler, Nicolai Lang·Mar 6, 2023
The competition between non-commuting projective measurements in discrete quantum circuits can give rise to entanglement transitions. It separates a regime where initially stored quantum information survives the time evolution from a regime where the...
Quantum Steganography via Coherent and Fock State Encoding in an Optical Medium
Bruno Avritzer, T. Brun·Mar 4, 2023
Steganography is an alternative to cryptography, where information is protected by secrecy -- being disguised as innocent communication or noise -- rather than being scrambled. In this work we develop schemes for steganographic communication using Fo...
Fault-tolerant qubit encoding using a spin-7/2 qudit
Sumin Lim, Junjie Liu, A. Ardavan·Mar 3, 2023
The implementation of error correction protocols is a central challenge in the development of practical quantum information technologies. Recently, multi-level quantum resources such as harmonic oscillators and qudits have attracted interest in this ...
Bell Inequalities with Overlapping Measurements.
Moisés Bermejo Morán, Alejandro Pozas-Kerstjens, Felix Huber·Mar 3, 2023
Which nonlocal correlations can be obtained, when a party has access to more than one subsystem? While traditionally nonlocality deals with spacelike separated parties, this question becomes important with quantum technologies that connect devices by...
Ablation loading of barium ions into a surface-electrode trap
X. Shi, S. Todaro, G. Mintzer +3 more·Mar 3, 2023
Trapped-ion quantum information processing may benefit from qubits encoded in isotopes that are practically available in only small quantities, e.g., due to low natural abundance or radioactivity. Laser ablation provides a method of controllably libe...
Quantum process tomography of continuous-variable gates using coherent states
Mikael Kervinen, Shahnawaz Ahmed, M. Kudra +5 more·Mar 2, 2023
Encoding quantum information into superpositions of multiple Fock states of a harmonic oscillator can provide protection against errors, but it comes with the cost of requiring more complex quantum gates that need to address multiple Fock states simu...
Hardware-efficient autonomous error correction with linear couplers in superconducting circuits
Ziqian Li, Tanay Roy, D. P'erez +2 more·Mar 2, 2023
Large-scale quantum computers will inevitably need quantum error correction (QEC) to protect information against decoherence. Given that the overhead of such error correction is often formidable, autonomous quantum error correction (AQEC) proposals o...
Fluxonium qubits in a flip-chip package
A. Somoroff, P. Truitt, A. Weis +9 more·Mar 2, 2023
The strong anharmonicity and high coherence times inherent to fluxonium superconducting circuits are beneficial for quantum information processing. In addition to requiring high-quality physical qubits, a quantum processor needs to be assembled in a ...
Learning Correlated Noise in a 39-Qubit Quantum Processor
R. Harper, S. Flammia·Mar 1, 2023
Building error-corrected quantum computers relies crucially on measuring and modeling noise on candidate devices. In particular, optimal error correction requires knowing the noise that occurs in the device as it executes the circuits required for er...