Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,406 papers in 12 months (-22% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
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...
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...
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...
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...
Coherent Quantum Speed Limits
Xuhui Xiao, Hai Wang, Xingze Qiu·Jan 3, 2024
We establish a comprehensive theoretical framework for coherent quantum speed limits (QSLs), deriving fundamental bounds on the rate of quantum evolution that explicitly isolate the contribution of quantum coherence. By applying Hölder's inequality f...
Exploring many-body interactions through quantum Fisher information
P. Cieśliński, P. Kurzyński, T. Sowi'nski +2 more·Jan 3, 2024
The investigation of many-body interactions holds significant importance in both quantum foundations and information. Hamiltonians coupling multiple particles at once, beyond others, can lead to a faster entanglement generation, multiqubit gate imple...
To Wedge Or Not To Wedge, Wedges and operator reconstructability in toy models of AdS/CFT
V. Linden·Jan 2, 2024
The AdS/CFT correspondence is an explicit realization of the holographic principle relating a theory of gravity in a volume of space to a lower dimensional quantum field theory on its boundary. By exploiting elements of quantum error correction, qubi...
Quantum walk on simplicial complexes for simplicial community detection
E. Song·Jan 1, 2024
Quantum walks have emerged as a transformative paradigm in quantum information processing and can be applied to various graph problems. This study explores discrete-time quantum walks on simplicial complexes, a higher-order generalization of graph st...
Empowering a qudit-based quantum processor by traversing the dual bosonic ladder
Long B. Nguyen, Noah Goss, K. Siva +6 more·Dec 29, 2023
High-dimensional quantum information processing has emerged as a promising avenue to transcend hardware limitations and advance the frontiers of quantum technologies. Harnessing the untapped potential of the so-called qudits necessitates the developm...
PT-symmetric mapping of three states and its implementation on a cloud quantum processor
Y. Balytskyi, Yevgen V. Kotukh, Gennady Khalimov +1 more·Dec 27, 2023
$\mathcal{PT}$-symmetric systems have garnered significant attention due to their unconventional properties. Despite the growing interest, there remains an ongoing debate about whether these systems outperform their Hermitian counterparts in practica...
Overcoming the Coherence Time Barrier in Quantum Machine Learning on Temporal Data
Fangjun Hu, Saeed A. Khan, Nicholas T. Bronn +4 more·Dec 26, 2023
Practical implementation of many quantum algorithms known today is limited by the coherence time of the executing quantum hardware and quantum sampling noise. Here we present a machine learning algorithm, NISQRC, for qubit-based quantum systems that ...
Universal control of four singlet–triplet qubits
Xin Zhang, E. Morozova, M. Rimbach-Russ +9 more·Dec 26, 2023
The coherent control of interacting spins in semiconductor quantum dots is of strong interest for quantum information processing and for studying quantum magnetism from the bottom up. Here we present a 2 × 4 germanium quantum dot array with full and ...
Quantum Secure Protocols for Multiparty Computations
Tapaswini Mohanty, Vikas Srivastava, S. Debnath +1 more·Dec 26, 2023
Secure multiparty computation (MPC) schemes allow two or more parties to conjointly compute a function on their private input sets while revealing nothing but the output. Existing state-of-the-art number-theoretic-based designs face the threat of att...
Error correction using squeezed Fock states
S. Korolev, E. N. Bashmakova, T. Golubeva·Dec 26, 2023
The paper addresses the construction of an error correction code for quantum computations based on squeezed Fock states. It is shown that the use of squeezed Fock states makes it possible to satisfy the Knill-Laflamme (KL) criteria for bosonic error ...
Skyrmion qubits: Challenges for future quantum computing applications
C. Psaroudaki, Elias Peraticos, C. Panagopoulos·Dec 25, 2023
Magnetic nano-skyrmions develop quantized helicity excitations, and the quantum tunneling between nano-skyrmions possessing distinct helicities is indicative of the quantum nature of these particles. Experimental methods capable of nondestructively r...
Large-Area Spatially Ordered Mesa Top Single Quantum Dots: Suitable Single Photon Emitters for On-Chip Integrated Quantum Information Processing Platforms
Qi Huang, Lucas Jordao, Siyuan Lu +3 more·Dec 23, 2023
Realization of the long sought on-chip scalable photonic quantum information processing networks has been thwarted by the absence of spatially-ordered and scalable on-demand single photon emitters with emission figures-of-merit exceeding the required...
On-demand transposition across light-matter interaction regimes in bosonic cQED
Fernando Valadares, Ni-Ni Huang, Kyle Timothy Ng Chu +5 more·Dec 22, 2023
The diverse applications of light-matter interactions in science and technology stem from the qualitatively distinct ways these interactions manifest, prompting the development of physical platforms that can interchange between regimes on demand. Bos...
Spectral signature of high-order photon processes enhanced by Cooper-pair pairing
W. C. Smith, A. Borgognoni, M. Villiers +7 more·Dec 22, 2023
Inducing interactions between individual photons is key for photonic quantum information and studying many-body photon states. Superconducting circuits are well suited to combine strong interactions with low losses. Typically, microwave photons are s...