Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,250
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22
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Research Volume
13,386 papers in 12 months (-22% 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
High-Precision Observable Estimation with Single Qubit Quantum Memory
L. A. Markovich, J. Borregaard·Aug 31, 2023
The estimation of multi-qubit observables is a key task in quantum information science. The standard approach is to decompose a multi-qubit observable into a weighted sum of Pauli strings. The observable can then be estimated from projective single q...
Efficient Approximation of Quantum Channel Fidelity Exploiting Symmetry
Yeow Meng Chee, Hoang Ta, Van Khu Vu·Aug 30, 2023
Determining the optimal fidelity for the transmission of quantum information over noisy quantum channels is one of the central problems in quantum information theory. Recently, [Berta-Borderi-Fawzi-Scholz, Mathematical Programming, 2021] introduced a...
Bounds on Autonomous Quantum Error Correction
O. Shtanko, Yu-Jie Liu, S. Lieu +2 more·Aug 30, 2023
Autonomous quantum memories are a way to passively protect quantum information using engineered dissipation that creates an “always-on'' decoder. We analyze Markovian autonomous decoders that can be implemented with a wide range of qubit and bosonic ...
Probing Quantum Telecloning on Superconducting Quantum Processors
Elijah Pelofske, Andreas Bärtschi, S. Eidenbenz +2 more·Aug 29, 2023
Quantum information cannot be perfectly cloned, but approximate copies of quantum information can be generated. Quantum telecloning combines approximate quantum cloning, more typically referred to as quantum cloning, and quantum teleportation. Quantu...
High-fidelity transmon coupler activated CCZ gate on fluxonium qubits
I. A. Simakov, G. S. Mazhorin, I. N. Moskalenko +2 more·Aug 29, 2023
The Toffoli gate takes a special place in the quantum information theory. It opens up a path for efficient implementation of complex quantum algorithms. Despite tremendous progress of the quantum processors based on the superconducting qubits, realiz...
Universal control of a bosonic mode via drive-activated native cubic interactions
A. Eriksson, Th'eo S'epulcre, Mikael Kervinen +9 more·Aug 29, 2023
Linear bosonic modes offer a hardware-efficient alternative for quantum information processing but require access to some nonlinearity for universal control. The lack of nonlinearity in photonics has led to encoded measurement-based quantum computing...
Universal quantum computation using atoms in cross-cavity systems
Luiz O. R. Solak, D. Z. Rossatto, C. Villas-Bôas·Aug 28, 2023
Quantum gates are the building blocks of quantum circuits, which in turn are the cornerstones of quantum information processing. In this work, we theoretically investigate a single-step implementation of both a universal two- (CNOT) and three-qubit (...
A cost-efficient quantum access network with qubit-based synchronization
C. Huang, Yen-Jie chen, T. Luo +4 more·Aug 28, 2023
Quantum key distribution (QKD) is a physical layer encryption technique that enables two distant parties to exchange secure keys with information-theoretic security. In the last two decades, QKD has transitioned from laboratory research to real-world...
Quantum-Informed Recursive Optimization Algorithms
Jernej Rudi Finžgar, Aron Kerschbaumer, M. Schuetz +2 more·Aug 25, 2023
We propose and implement a family of quantum-informed recursive optimization (QIRO) algorithms for combinatorial optimization problems. Our approach leverages quantum resources to obtain information that is used in problem-specific classical reductio...
Parallel-in-time quantum simulation via Page and Wootters quantum time
N. Diaz, Paolo Braccia, Martín Larocca +3 more·Aug 24, 2023
In the past few decades, researchers have created a veritable zoo of quantum algorithms by drawing inspiration from classical computing, information theory, and even from physical phenomena. Here, we present quantum algorithms for parallel-in-time si...
On the Study of Partial Qubit Hamiltonian for Efficient Molecular Simulation Using Variational Quantum Eigensolvers
Harshdeep Singh, Sabyashachi Mishra, S. Majumder·Aug 24, 2023
Quantum computing is being extensively used in quantum chemistry, especially in simulating simple molecules and evaluating properties like the ground state energy, dipole moment, etc. The transformation of a molecular Hamiltonian from the fermionic s...
Practical limitations on robustness and scalability of quantum Internet
A. Sadhu, Meghana Ayyala Somayajula, K. Horodecki +1 more·Aug 24, 2023
As quantum theory allows for information processing and computing tasks that otherwise are not possible with classical systems, there is a need and use of quantum Internet beyond existing network systems. At the same time, the realization of a desira...
Quantum state tomography of photon's polarization and path degrees of freedom
J. L. Ferreira, B. L. Bernardo·Aug 24, 2023
Quantum state tomography (QST), the process through which the density matrix of a quantum system is characterized from measurements of specific observables, is a fundamental pillar in the fields of quantum information and computation. In this work, w...
Cryogenic microwave link for quantum local area networks
M. Renger, S. Gandorfer, W. Yam +16 more·Aug 23, 2023
Scalable quantum information processing with superconducting circuits is expected to advance from individual processors located in single dilution refrigerators to more powerful distributed quantum computing systems. The realization of hardware platf...
Zero and Finite Temperature Quantum Simulations Powered by Quantum Magic
A. Gu, Hong-ye Hu, Di Luo +3 more·Aug 22, 2023
We introduce a quantum information theory-inspired method to improve the characterization of many-body Hamiltonians on near-term quantum devices. We design a new class of similarity transformations that, when applied as a preprocessing step, can subs...
Exploration of superconducting multi-mode cavity architectures for quantum computing
A. Reineri, S. Zorzetti, Tanay Roy +1 more·Aug 22, 2023
Superconducting radio-frequency (SRF) cavities coupled to transmon circuits have proven to be a promising platform for building high-coherence quantum information processors. An essential aspect of this realization involves designing high quality fac...
Phase-Sensitive Quantum Measurement without Controlled Operations.
Yi-Long Yang, Arthur Christianen, M. Bañuls +2 more·Aug 21, 2023
Many quantum algorithms rely on the measurement of complex quantum amplitudes. Standard approaches to obtain the phase information, such as the Hadamard test, give rise to large overheads due to the need for global controlled-unitary operations. We i...
Near-Minimal Gate Set Tomography Experiment Designs
Corey I. Ostrove, K. Rudinger, Stefan K. Seritan +2 more·Aug 17, 2023
Gate set tomography (GST) is a technique for self-consistently and precisely estimating the entire gate set of a quantum processor. GST carries nontrivial experimental cost, and as such the use of GST in practice has so far been limited to characteri...
Protocol for nearly deterministic parity projection on two photonic qubits
Chenxu Liu, R. Frantzeskakis, S. Economou +1 more·Aug 17, 2023
Photonic parity projection plays an important role in photonic quantum information processing. Nondestructive parity projections normally require high-fidelity controlled-Z gates between photonic and matter qubits, which can be experimentally demandi...
Autonomous Stabilization of Fock States in an Oscillator against Multiphoton Losses.
Sai Li, Zhongchu Ni, Libo Zhang +8 more·Aug 16, 2023
Fock states with a well-defined number of photons in an oscillator have shown a wide range of applications in quantum information science. Nonetheless, their usefulness has been marred by single and multiphoton losses due to unavoidable environment-i...