Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Nonreciprocal Quantum Batteries.
Borhan Ahmadi, P. Mazurek, P. Horodecki +1 more·Jan 10, 2024
Nonreciprocity, arising from the breaking of time-reversal symmetry, has become a fundamental tool in diverse quantum technology applications. It enables directional flow of signals and efficient noise suppression, constituting a key element in the a...
Wafer-scale CMOS-compatible graphene Josephson field-effect transistors
A. A. Generalov, K. Viisanen, J. Senior +5 more·Jan 10, 2024
Electrostatically tunable Josephson field-effect transistors (JoFETs) are one of the most desired building blocks of quantum electronics. Applications of JoFETs range from parametric amplifiers and superconducting qubits to a variety of integrated su...
Reducing measurement costs by recycling the Hessian in adaptive variational quantum algorithms
Mafalda Ramôa, Luis Paulo Santos, N. Mayhall +2 more·Jan 10, 2024
Adaptive protocols enable the construction of more efficient state preparation circuits in variational quantum algorithms (VQAs) by utilizing data obtained from the quantum processor during the execution of the algorithm. This idea originated with Ad...
Photonics for Sustainable Computing
Farbin Fayza, S. P. Rao, Darius Bunandar +2 more·Jan 10, 2024
Photonic integrated circuits are finding use in a variety of applications including optical transceivers, LIDAR, bio-sensing, photonic quantum computing, and Machine Learning (ML). In particular, with the exponentially increasing sizes of ML models, ...
Simulating Quantum Field Theories on Gate-Based Quantum Computers
Gayathree M. Vinod, Anil Shaji·Jan 9, 2024
We implement a simulation of a quantum field theory in 1+1 space–time dimensions on a gate-based quantum computer using the light-front formulation of the theory. The nonperturbative simulation of the Yukawa model field theory is verified on IBM's si...
Energy Landscapes for the Quantum Approximate Optimisation Algorithm
Boy Choy, D. J. Wales·Jan 9, 2024
Variational quantum algorithms (VQAs) have demonstrated considerable potential in solving NP-hard combinatorial problems in the contemporary near intermediate-scale quantum (NISQ) era. The quantum approximate optimisation algorithm (QAOA) is one such...
Error suppression in multicomponent cat codes with photon subtraction and teleamplification.
S. U. Shringarpure, Yong-Siah Teo, Hyunseok Jeong·Jan 9, 2024
It is known that multiphoton states can be protected from decoherence due to a passive loss channel by applying noiseless attenuation before and noiseless amplification after the channel. In this work, we propose the combined use of multiphoton subtr...
Coherent errors in stabilizer codes caused by quasistatic phase damping
Dávid Pataki, Áron Márton, János K. Asbóth +1 more·Jan 9, 2024
Quantum error correction is a key challenge for the development of practical quantum computers, a direction in which significant experimental progress has been made in recent years. In solid-state qubits, one of the leading information loss mechanism...
An improved Quantum Max Cut approximation via matching
Eunou Lee, Ojas Parekh·Jan 8, 2024
Finding a high (or low) energy state of a given quantum Hamiltonian is a potential area to gain a provable and practical quantum advantage. A line of recent studies focuses on Quantum Max Cut, where one is asked to find a high energy state of a given...
Ferromagnetic materials for Josephson π junctions
N. Birge, N. Satchell·Jan 8, 2024
The past two decades have seen an explosion of work on Josephson junctions containing ferromagnetic materials. Such junctions are under consideration for applications in digital superconducting logic and memory. In the presence of the exchange field,...
Fault-Tolerant Quantum Computation Using Large Spin-Cat Codes
Sivaprasad Omanakuttan, Vikas Buchemmavari, J. Gross +2 more·Jan 8, 2024
We construct a fault-tolerant quantum error-correcting protocol based on a qubit encoded in a large spin qudit using a spin-cat code, analogous to the continuous-variable cat encoding. With this, we can correct the dominant error sources, namely proc...
High-Rate and High-Fidelity Modular Interconnects between Neutral Atom Quantum Processors
Yiyi Li, Jeff D. Thompson·Jan 8, 2024
Quantum links between physically separated modules are important for scaling many quantum computing technologies. The key metrics are the generation rate and fidelity of remote Bell pairs. In this work, we propose an experimental protocol for generat...
S-FABLE and LS-FABLE: Fast approximate block-encoding algorithms for unstructured sparse matrices
Parker Kuklinski, Benjamin Rempfer·Jan 8, 2024
The Fast Approximate BLock-Encoding algorithm (FABLE) is a technique to block-encode arbitrary $N\times N$ dense matrices into quantum circuits using at most $O(N^2)$ one and two-qubit gates and $\mathcal{O}(N^2\log{N})$ classical operations. The met...
Design of Fully Integrated 45 nm CMOS System-on-Chip Receiver for Readout of Transmon Qubit
Ahmad Salmanogli, A. Bermak·Jan 8, 2024
This study unveils a comprehensive design strategy, intricately addressing the realization of transmon qubits, the design of Josephson parametric amplifiers, and the development of an innovative fully integrated receiver dedicated to sensing ultra-lo...
Fast and high-fidelity dispersive readout of a spin qubit via squeezing and resonator nonlinearity
Chon‐Fai Kam, Xuedong Hu·Jan 8, 2024
Fast and high-fidelity qubit measurement is crucial for achieving quantum error correction, a fundamental element in the development of universal quantum computing. For electron spin qubits, fast readout stands out as a major obstacle in the pursuit ...
Exact results on finite size corrections for surface codes tailored to biased noise
Yinzi Xiao, Basudha Srivastava, Mats Granath·Jan 8, 2024
The code-capacity threshold of a scalable quantum error correcting stabilizer code can be expressed as a thermodynamic phase transition of a corresponding random-bond Ising model. Here we study the XY and XZZX surface codes under phase-biased noise, ...
Non-adiabatic holonomies as photonic quantum gates
Vera Neef, Julien Pinske, T. Wolterink +4 more·Jan 8, 2024
One of the most promising nascent technologies, quantum computation faces a major challenge: The need for stable computational building blocks. We present the quantum-optical realization of non-adiabatic holonomies that can be used as single-qubit qu...
Quantum Computing and Atmospheric Dynamics: Exploring the Lorenz System
V. Armaos, A. Argiriou, Ioannis Kioutsioukis·Jan 7, 2024
This paper explores the potential contribution of quantum computing, specifically the Variational Quantum Eigensolver (VQE), into atmospheric physics research and application problems using as an example the Lorenz system, a paradigm of chaotic behav...
Tantalum airbridges for scalable superconducting quantum processors
K. Bu, Sainan Huai, Zhenxing Zhang +8 more·Jan 7, 2024
The unique property of tantalum (Ta), particularly its long coherent lifetime in superconducting qubits and its exceptional resistance to both acid and alkali, makes it promising for superconducting quantum processors. It is a notable advantage to ac...
Robustness of different modifications of Grover’s algorithm based on generalized Householder reflections with different phases
Hristo Tonchev, Petar Danev·Jan 7, 2024
In this work we study five Grovers algorithm modifications, where each iteration is constructed by two generalized Householder reflections, against inaccuracies in the phases. By using semi-empirical methods, we investigate various characteristics of...