Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,402
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150
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Research Volume
13,528 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
Sequence Processing with Quantum Tensor Networks
Carys Harvey, Richie Yeung, K. Meichanetzidis·Aug 15, 2023
We introduce complex-valued tensor network models for sequence processing motivated by correspondence to probabilistic graphical models, interpretability and resource compression. Inductive bias is introduced to our models via network architecture, a...
Entanglement, Quantum Correlators, and Connectivity in Graph States
Arthur Vesperini, R. Franzosi·Aug 15, 2023
This work presents a comprehensive exploration of the entanglement and graph connectivity properties of Graph States (GSs). Qubit entanglement in Pseudo Graph States (PGSs) is quantified using the Entanglement Distance (ED), a recently introduced mea...
Natural Orbitals and Sparsity of Quantum Mutual Information.
Leonardo Ratini, Chiara Capecci, L. Guidoni·Aug 15, 2023
Natural orbitals, defined in electronic structure and quantum chemistry as the molecular orbitals diagonalizing the one-particle reduced density matrix of the ground state, have been conjectured for decades to be the perfect reference orbitals to des...
Single Qubit State Estimation on NISQ Devices with Limited Resources and SIC-POVMs
Cristian A. Galvis-Florez, Daniel Reitzner, Simo Särkkä·Aug 15, 2023
Current quantum computers have the potential to overcome classical computational methods, however, the capability of the algorithms that can be executed on noisy intermediate-scale quantum devices is limited due to hardware imperfections. Estimating ...
Error-Resilience Phase Transitions in Encoding-Decoding Quantum Circuits.
X. Turkeshi, P. Sierant·Aug 11, 2023
Understanding how errors deteriorate the information encoded in a many-body quantum system is a fundamental problem with practical implications for quantum technologies. Here, we investigate a class of encoding-decoding random circuits subject to loc...
Universal imaginary-time critical dynamics on a quantum computer
Shenmin Zhang, Shuai Yin·Aug 10, 2023
Quantum computers promise a highly efficient approach to investigate quantum phase transitions, which describe abrupt changes between different ground states of many-body systems. At quantum critical points, the divergent correlation length and entan...
Protocols to measure the non-Abelian Berry phase by pumping a spin qubit through a quantum-dot loop
Baksa Kolok, Andr'as P'alyi·Aug 10, 2023
A quantum system constrained to a degenerate energy eigenspace can undergo a nontrival time evolution upon adiabatic driving, described by a non-Abelian Berry phase. This type of dynamics may provide logical gates in quantum computing that are robust...
On the Pauli group on 2-qubits in dynamical systems with pseudofermions
F. Bagarello, Yanga Bavuma, Francesco G. Russo·Aug 9, 2023
Abstract The group of matrices P 1 {P_{1}} of Pauli is a finite 2-group of order 16 and plays a fundamental role in quantum information theory, since it is related to the quantum information on the 1-qubit. Here we show that both P 1 {P_{1}} and the ...
Beyond trace class -- Tensor products of Hilbert spaces and operator ideals in quantum physics
Frank Oertel·Aug 8, 2023
Starting from the meaning of the conjugate of a complex Hilbert space, including a related application of the theorem of Fréchet-Riesz (by which an analysis of semilinear operators can be reduced to - linear - operator theory) to a revisit of applica...
Quantum gate algorithm for reference-guided DNA sequence alignment
Georgios D. Varsamis, Ioannis G. Karafyllidis, K. Gilkes +8 more·Aug 8, 2023
Reference-guided DNA sequencing and alignment is an important process in computational molecular biology. The amount of DNA data grows very fast, and many new genomes are waiting to be sequenced while millions of private genomes need to be re-sequenc...
Wavefunction branching: when you can't tell pure states from mixed states
Jordan K. Taylor, I. McCulloch·Aug 8, 2023
We propose a definition of wavefunction "branchings": quantum superpositions which can't be feasibly distinguished from the corresponding mixed state, even under time evolution. Our definition is largely independent of interpretations, requiring only...
Hardware Architecture for a Quantum Computer Trusted Execution Environment
Theodoros Trochatos, Chuan Xu, S. Deshpande +3 more·Aug 7, 2023
The cloud-based environments in which today's and future quantum computers will operate, raise concerns about the security and privacy of user's intellectual property. Quantum circuits submitted to cloud-based quantum computer providers represent sen...
Advances in bosonic quantum error correction with Gottesman–Kitaev–Preskill Codes: Theory, engineering and applications
Anthony J. Brady, A. Eickbusch, Shraddha Singh +2 more·Aug 5, 2023
Encoding quantum information into a set of harmonic oscillators is considered a hardware efficient approach to mitigate noise for reliable quantum information processing. Various codes have been proposed to encode a qubit into an oscillator -- includ...
Coherent spin qubit shuttling through germanium quantum dots
Floor van Riggelen-Doelman, Chien-An Wang, S. L. de Snoo +7 more·Aug 4, 2023
Quantum links can interconnect qubit registers and are therefore essential in networked quantum computing. Semiconductor quantum dot qubits have seen significant progress in the high-fidelity operation of small qubit registers but establishing a comp...
Variational quantum algorithm for experimental photonic multiparameter estimation
V. Cimini, M. Valeri, S. Piacentini +5 more·Aug 4, 2023
Variational quantum metrology represents a powerful tool to optimize estimation strategies, resulting particularly beneficial for multiparameter estimation problems that often suffer from limitations due to the curse of dimensionality and computation...
cuQuantum SDK: A High-Performance Library for Accelerating Quantum Science
H. Bayraktar, A. Charara, David Clark +19 more·Aug 3, 2023
We present the NVIDIA cuQuantum SDK [1], a state-of-the-art library of composable primitives for GPU-accelerated quantum circuit simulations. As the size of quantum devices continues to increase, making their classical simulation progressively more d...
Quantum Maps Between CPTP and HPTP
Ningping Cao, Maxwell Fitzsimmons, Z. Mann +2 more·Aug 3, 2023
For an open quantum system to evolve under CPTP maps, assumptions are made on the initial correlations between the system and the environment. Hermitian-preserving trace-preserving (HPTP) maps are considered as the local dynamic maps beyond CPTP. In ...
Simulating photon counting from dynamic quantum emitters by exploiting zero-photon measurements
S. Wein·Jul 31, 2023
Many applications of quantum optics demand delicate quantum properties of light carefully tailored to accomplish a specific task. To this end, numerical simulations of quantum light sources are vital for designing, characterizing, and optimizing quan...
Quantum state tomography with locally purified density operators and local measurements
Yuchen Guo, Shuo Yang·Jul 31, 2023
Understanding quantum systems is of significant importance for assessing the performance of quantum hardware and software, as well as exploring quantum control and quantum sensing. An efficient representation of quantum states enables realizing quant...
Robust Estimation of the Quantum Fisher Information on a Quantum Processor
Vittorio Vitale, A. Rath, P. Jurcevic +3 more·Jul 31, 2023
We present the experimental measurement, on a quantum processor, of a series of polynomial lower bounds that to the quantum Fisher information (QFI), a fundamental quantity for certifying multipartite entanglement that is useful for metrological appl...