Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Bayesian Inference with Renormalization for Gravitational Waves
Gabriel Escrig, Roberto Campos, H. Qi +1 more·Feb 29, 2024
Advancements in gravitational-wave (GW) interferometers, particularly the next generation, are poised to enable the detections of orders of magnitude more GWs from compact binary coalescences. While the surge in detections will profoundly advance GW ...
Noisy intermediate-scale quantum simulation of the one-dimensional wave equation
Lewis Wright, Conor Mc Keever, Jeremy T. First +5 more·Feb 29, 2024
We design and implement quantum circuits for the simulation of the one-dimensional wave equation on the Quantinuum H1-1 quantum computer. The circuit depth of our approach scales as O(n2) for n qubits representing the solution on 2n grid points, and ...
Fault-tolerant structures for measurement-based quantum computation on a network
Yves van Montfort, S. D. Bone, David Elkouss·Feb 29, 2024
In this work, we introduce a method to construct fault-tolerant measurement-based quantum computation (MBQC) architectures and numerically estimate their performance over various types of networks. A possible application of such a paradigm is distrib...
A simple and efficient joint measurement strategy for estimating fermionic observables and Hamiltonians
Joanna Majsak, Daniel McNulty, Michał Oszmaniec·Feb 29, 2024
We propose a simple scheme to estimate fermionic observables and Hamiltonians relevant in quantum chemistry and correlated fermionic systems. Our approach is based on implementing a measurement that jointly measures noisy versions of any product of t...
Quantum-computer-based verification of quantum thermodynamic uncertainty relation.
Nobumasa Ishida, Y. Hasegawa·Feb 29, 2024
Quantum thermodynamic uncertainty relations establish fundamental trade-offs between the precision achievable in quantum systems and associated thermodynamic quantities such as entropy production or dynamical activity. While foundational, empirical d...
Quantum Hardware Roofline: Evaluating the Impact of Gate Expressivity on Quantum Processor Design
Justin Kalloor, Mathias Weiden, Ed Younis +3 more·Feb 29, 2024
The design space of current quantum computers is expansive, with no obvious winning solution, leaving practitioners with a crucial question: “What is the optimal system configuration to run an algorithm?” This paper explores hardware design trade-off...
Simple high-saturation-power quantum-limited rf-SQUID-array-based Josephson parametric amplifiers
Ryan Kaufman, Chenxu Liu, K. Cicak +7 more·Feb 29, 2024
High-fidelity quantum non-demolition qubit measurement is critical to error correction and rapid qubit feedback in large-scale quantum computing. High-fidelity readout requires passing a short and strong pulse through the qubit's readout resonator, w...
Almost device-independent certification of GME states with minimal measurements
Shubhayan Sarkar, Alexandre C. Orthey,, Gautam Sharma +2 more·Feb 28, 2024
Device-independent certification of quantum states enables the characterization of states within a device under minimal physical assumptions. A major problem in this regard is to certify quantum states using minimal resources. Aiming to address this ...
Operating semiconductor quantum processors with hopping spins
Chien-An Wang, Valentin John, Hanifa Tidjani +16 more·Feb 28, 2024
Qubits that can be efficiently controlled are essential for the development of scalable quantum hardware. Although resonant control is used to execute high-fidelity quantum gates, the scalability is challenged by the integration of high-frequency osc...
Linear gate bounds against natural functions for position-verification
V. Asadi, Richard Cleve, Eric Culf +1 more·Feb 28, 2024
A quantum position-verification scheme attempts to verify the spatial location of a prover. The prover is issued a challenge with quantum and classical inputs and must respond with appropriate timings. We consider two well-studied position-verificati...
Port-Based State Preparation and Applications
Garazi Muguruza, F. Speelman·Feb 28, 2024
We introduce Port-Based State Preparation (PBSP), a teleportation task where Alice holds a complete classical description of the target state and Bob's correction operations are restricted to only tracing out registers. We show a protocol that implem...
Hybrid optomechanical superconducting qubit system
J. Manninen, R. Blick, F. Massel·Feb 28, 2024
We propose an integrated nonlinear superconducting device based on a nanoelectromechanical shuttle. The system can be described as a qubit coupled to a bosonic mode. The topology of the circuit gives rise to an adjustable qubit/mechanical coupling, a...
Boundary treatment for variational quantum simulations of partial differential equations on quantum computers
Paul Over, Sergio Bengoechea, T. Rung +4 more·Feb 28, 2024
The paper presents a variational quantum algorithm to solve initial-boundary value problems described by second-order partial differential equations. The approach uses hybrid classical/quantum hardware that is well suited for quantum computers of the...
Reducing the Number of Qubits from $n^2$ to $n\log_{2} (n)$ to Solve the Traveling Salesman Problem with Quantum Computers: A Proposal for Demonstrating Quantum Supremacy in the NISQ Era
Mehdi Ramezani, Sadegh Salami, Mehdi Shokhmkar +2 more·Feb 28, 2024
In our pursuit of quantum supremacy during the NISQ era, this research introduces a novel approach rooted in the Quantum Approximate Optimization Algorithm (QAOA) framework to address the Traveling Salesman Problem (TSP). By strategically reducing th...
Quantum approximate optimization algorithm with random and subgraph phase operators
Anthony Wilkie, Igor Gaidai, James Ostrowski +1 more·Feb 28, 2024
The quantum approximate optimization algorithm (QAOA) is a promising quantum algorithm that can be used to approximately solve combinatorial optimization problems. The usual QAOA ansatz consists of an alternating application of the cost and mixer Ham...
Quantum State Compression with Polar Codes
J. Weinberg, Avijit Mandal, Henry D. Pfister·Feb 28, 2024
In the quantum compression scheme proposed by Schumacher, Alice compresses a message that Bob decompresses. In that approach, there is some probability of failure and, even when successful, some distortion of the state. For sufficiently large blockle...
A quantum algorithm for learning a graph of bounded degree
Asaf Ferber, Liam Hardiman·Feb 28, 2024
We are presented with a graph, $G$, on $n$ vertices with $m$ edges whose edge set is unknown. Our goal is to learn the edges of $G$ with as few queries to an oracle as possible. When we submit a set $S$ of vertices to the oracle, it tells us whether ...
Two-stage Quantum Estimation and the Asymptotics of Quantum-enhanced Transmittance Sensing
Zihao Gong, Boulat A. Bash·Feb 27, 2024
We consider estimation of a single unknown parameter embedded in a quantum state. Quantum Cramér-Rao bound (QCRB) is the ultimate limit of the mean squared error for any unbiased estimator. While it can be achieved asymptotically for a large number o...
Arbitrary control over multimode wave propagation for machine learning
Tatsuhiro Onodera, Martin M. Stein, Benjamin A. Ash +10 more·Feb 27, 2024
Controlled multimode wave propagation can enable more space-efficient photonic processors than architectures based on discrete components connected by single-mode waveguides. Instead of defining discrete elements, one can sculpt the continuous substr...
Method for SOFI-based spatial super-resolution in nanosensing with blinking emitters
Alexander Mikhalychev, Alex Ulyanenkov·Feb 27, 2024
We propose a method of spatial resolution enhancement in metrology (thermometry, magnetometry, pH estimation, and similar methods) with blinking fluorescent nanosensors by combining sensing with super-resolution optical fluctuation imaging (SOFI). By...