Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Deterministic single-photon source in the ultrastrong-coupling regime
Jie Peng, Jian-Shun Tang, P. Tang +7 more·Nov 11, 2022
Deterministic single-photon sources are important and ubiquitous in quantum information protocols. However, to the best of our knowledge, none of them work in the ultrastrong light-matter coupling regime, and each excitation process can only emit one...
Qafny: A Quantum-Program Verifier
Liyi Li, Mingwei Zhu, R. Cleaveland +4 more·Nov 11, 2022
Because of the probabilistic/nondeterministic behavior of quantum programs, it is highly advisable to verify them formally to ensure that they correctly implement their specifications. Formal verification, however, also traditionally requires signifi...
Adaptive basis sets for practical quantum computing
Hyukgun Kwon, Gregory M. Curtin, Zachary Morrow +2 more·Nov 11, 2022
Electronic structure calculations on small systems such as H$_2$, H$_2$O, LiH, and BeH$_2$ with chemical accuracy are still a challenge for the current generation of the noisy intermediate-scale quantum (NISQ) devices. One of the reasons is that due ...
Quantum Algorithm for Estimating Largest Eigenvalues
Nhat A. Nghiem, T. Wei·Nov 11, 2022
A majority of numerical scientific computation relies heavily on handling and manipulating matrices, such as solving linear equations, finding eigenvalues and eigenvectors, and so on. Many quantum algorithms have been developed to advance these compu...
Architectures for Quantum Information Processing
S. Upadhyay, M. Alam, Swaroop Ghosh·Nov 11, 2022
Quantum computing is changing the way we think about computing. Significant strides in research and development for managing and harnessing the power of quantum systems has been made in recent years, demonstrating the potential for transformative qua...
Quantum Routing for Emerging Quantum Networks
W. Shi, R. Malaney·Nov 11, 2022
Quantum routing, the entanglement of an input quantum signal over multiple output paths, will be an important aspect of future quantum networks. Implementation of such routing in nearterm quantum networks via the noisy quantum devices currently under...
Tuning for Quantum Speedup in Directed Lackadaisical Quantum Walks
Pranay Naredi, J. Kannan, M. S. Santhanam·Nov 11, 2022
Quantum walks constitute an important tool for designing quantum algorithms and information processing tasks. In a lackadaisical walk, in addition to the possibility of moving out of a node, the walker can remain on the same node with some probabilit...
Hardware optimized parity check gates for superconducting surface codes
M. Reagor, Thomas Perez, E. Sete +1 more·Nov 11, 2022
Error correcting codes use multi-qubit measurements to realize fault-tolerant quantum logic steps. In fact, the resources needed to scale-up fault-tolerant quantum computing hardware are largely set by this task. Tailoring next-generation processors ...
Quantum error mitigation for rotation-symmetric bosonic codes with symmetry expansion
Suguru Endo, Yasunari Suzuki, Kento Tsubouchi +4 more·Nov 11, 2022
The rotation symmetric bosonic code (RSBC) is a unified framework of practical bosonic codes that have rotation symmetries, such as cat codes and binomial codes. While cat codes achieve the break-even point in which the coherence time of the encoded ...
Reversible computation and the causal structure of space-time
Anandamay Das Bhowmik, P. Parashar·Nov 11, 2022
Reversible algorithms play a crucial role both in classical and quantum computation. While for a classical bit the only nontrivial reversible operation is the bit-flip, nature is far more versatile in what it allows to do to a quantum bit. The revers...
Exploring weak value arguments and Bargmann invariants in $N$-level quantum systems through the Majorana symmetric representation
Lorena B Ferraz, Dominique L Lambert, Yves Caudano·Nov 10, 2022
This work examines the argument of weak values for general observables and develops a geometric description on the Bloch sphere. We apply the Majorana symmetric representation to reach this goal. The weak value of a general observable is proportional...
Symmetry-based quantum algorithms for open-shop scheduling with hard constraints
Lennart Binkowski, Gereon Koßmann, Christian Tutschku +1 more·Nov 10, 2022
Encoding hard-constrained optimization problems into a variational quantum algorithm often turns out to be a challenging task. In this work, we provide a solution for the class of open-shop scheduling problems (OSSPs), which we achieve by rigorously ...
Quantum power flows: from theory to practice
Junyu Liu, Hang Zheng, M. Hanada +2 more·Nov 10, 2022
The high-level integration of spatial-dispersed renewable energies can greatly enlarge future smart grid size and complicate system operations. Existing numerical methods based on classical computational oracles may be challenged to fulfill efficienc...
Modularized and scalable compilation for double quantum dot quantum computing
Runhong He, Xusheng Xu, M. Byrd +1 more·Nov 10, 2022
Any quantum program on a realistic quantum device must be compiled into an executable form while taking into account the underlying hardware constraints. Stringent restrictions on architecture and control imposed by physical platforms make this very ...
Hybrid Quantum Neural Network for Drug Response Prediction
A. Sagingalieva, Mohammad Kordzanganeh, Nurbolat Kenbayev +3 more·Nov 10, 2022
Simple Summary This work successfully employs a novel approach in processing patient and drug data to predict the drug response for cancer patients. The approach uses a deep quantum computing circuit as part of a machine learning architecture to simu...
High-speed thin-film lithium niobate quantum processor driven by a solid-state quantum emitter
Patrik I. Sund, E. Lomonte, S. Paesani +9 more·Nov 10, 2022
Scalable photonic quantum computing architectures pose stringent requirements on photonic processing devices. The needs for low-loss high-speed reconfigurable circuits and near-deterministic resource state generators are some of the most challenging ...
Stout Smearing on a Quantum Computer
Erik J. Gustafson·Nov 10, 2022
Smearing of gauge-field configurations in lattice field theory improves the results of lattice simulations by suppressing high energy modes from correlation functions. In quantum simulations, high kinetic energy eigenstates are introduced when the ti...
Quantum key distribution rates from semidefinite programming
M. Ara'ujo, Marcus Huber, M. Navascu'es +2 more·Nov 10, 2022
Computing the key rate in quantum key distribution (QKD) protocols is a long standing challenge. Analytical methods are limited to a handful of protocols with highly symmetric measurement bases. Numerical methods can handle arbitrary measurement base...
Optimal deterministic quantum algorithm for the promised element distinctness problem
Guanzhong Li, Lvzhou Li·Nov 10, 2022
The element distinctness problem is to determine whether a string $x=(x_1,\ldots,x_N)$ of $N$ elements contains two elements of the same value (a.k.a colliding pair), for which Ambainis proposed an optimal quantum algorithm. The idea behind Ambainis'...
Does Qubit Connectivity Impact Quantum Circuit Complexity?
Pei Yuan, J. Allcock, Shengyu Zhang·Nov 10, 2022
Some physical implementation schemes of quantum computing can apply two-qubit gates only on certain pairs of qubits. These connectivity constraints are commonly viewed as a significant disadvantage. For example, compiling an unrestricted <inline-form...