Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,494
This Month
224
Today
0
Research Volume
13,591 papers in 12 months (-18% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Full-field mode sorter using two optimized phase transformations for high-dimensional quantum cryptography
R. Fickler, F. Bouchard, E. Giese +3 more·May 3, 2019
High-dimensional encoding schemes have emerged as a novel way to perform quantum information tasks. For high dimensionality, temporal and transverse spatial modes of photons are the two paradigmatic degrees of freedom commonly used in such experiment...
Quantum singular value decomposer
Carlos Bravo-Prieto, Diego Garc'ia-Mart'in, J. Latorre·May 3, 2019
We present a variational quantum circuit that produces the singular value decomposition of a bipartite pure state. The proposed circuit, which we name quantum singular value decomposer or QSVD, is made of two unitaries respectively acting on each par...
Resonant microwave-mediated interactions between distant electron spins
F. Borjans, X. Croot, Xiao Mi +3 more·May 2, 2019
Nonlocal qubit interactions are a hallmark of advanced quantum information technologies1–5. The ability to transfer quantum states and generate entanglement over distances much larger than qubit length scales greatly increases connectivity and is an ...
Generation of multicomponent atomic Schrödinger cat states of up to 20 qubits
Chao Song, Kai Xu, Hekang Li +13 more·May 1, 2019
Entanglement goes large The success of quantum computing relies on the ability to entangle large-scale systems. Various platforms are being pursued, with architectures based on superconducting qubits and trapped atoms being the most advanced. By enta...
Validating multi-photon quantum interference with finite data
Fulvio Flamini, M. Walschaers, N. Spagnolo +3 more·Apr 28, 2019
Multi-particle interference is a key resource for quantum information processing, as exemplified by Boson Sampling. Hence, given its fragile nature, an essential desideratum is a solid and reliable framework for its validation. However, while several...
On analog quantum algorithms for the mixing of Markov chains
Shantanav Chakraborty, K. Luh, J. Roland·Apr 26, 2019
The problem of sampling from the stationary distribution of a Markov chain finds widespread applications in a variety of fields. The time required for a Markov chain to converge to its stationary distribution is known as the classical mixing time. In...
Efficient Online Quantum Generative Adversarial Learning Algorithms with Applications
Yuxuan Du, Min-Hsiu Hsieh, D. Tao·Apr 21, 2019
The recognition of entanglement states is a notoriously difficult problem when no prior information is available. Here, we propose an efficient quantum adversarial bipartite entanglement detection scheme to address this issue. Our proposal reformulat...
Deterministic Preparation of Dicke States
Andreas Bärtschi, S. Eidenbenz·Apr 15, 2019
The Dicke state $|D_k^n\rangle$ is an equal-weight superposition of all $n$-qubit states with Hamming Weight $k$ (i.e. all strings of length $n$ with exactly $k$ ones over a binary alphabet). Dicke states are an important class of entangled quantum s...
Adaptive scheduling of noise characterization in quantum computers
R. Gupta, A. Milne, C. Edmunds +2 more·Apr 15, 2019
New quantum computing architectures consider integrating qubits as sensors to provide actionable information useful for decoherence mitigation on neighboring data qubits. Little work has addressed how such schemes may be efficiently implemented in or...
Coherent spin-state transfer via Heisenberg exchange
Y. Kandel, Haifeng Qiao, S. Fallahi +3 more·Apr 10, 2019
Quantum information science has the potential to revolutionize modern technology by providing resource-efficient approaches to computing1, communication2 and sensing3. Although the physical qubits in a realistic quantum device will inevitably suffer ...
Polarization of Quantum Channels Using Clifford-Based Channel Combining
F. Dupuis, Ashutosh Goswami, M. Mhalla +1 more·Apr 9, 2019
We provide a purely quantum version of polar codes, achieving the symmetric coherent information of any qubit-input quantum channel. Our scheme relies on a recursive channel combining and splitting construction, where a two-qubit gate randomly chosen...
Experimental Quantum-enhanced Cryptographic Remote Control
Xiao-Ling Pang, Lu-Feng Qiao, Ke Sun +3 more·Apr 9, 2019
The Internet of Things (IoT), as a cutting-edge integrated cross-technology, promises to informationize people’s daily lives, while being threatened by continuous challenges of eavesdropping and tampering. The emerging quantum cryptography, harnessin...
Injection Locking and Parametric Locking in a Superconducting Circuit
D. Markovi'c, J. Pillet, E. Flurin +2 more·Apr 2, 2019
When a signal is injected in a parametric oscillator close enough to its resonance, the oscillator frequency and phase get locked to those of the injected signal. Here, we demonstrate two frequency locking schemes using a Josephson mixer in the param...
Generation of a time-frequency grid state with integrated biphoton frequency combs
N. Fabre, G. Maltese, F. Appas +9 more·Apr 2, 2019
Encoding quantum information in continuous variables is intrinsically faulty. Nevertheless, redundant qubits can be used for error correction, as proposed by Gottesman et al. [Phys. Rev. A 64 012310 (2001)]. We show how to experimentally implement th...
Encoding an Oscillator into Many Oscillators.
Kyungjoo Noh, S. Girvin, Liang Jiang·Mar 29, 2019
An outstanding challenge for quantum information processing using bosonic systems is Gaussian errors such as excitation loss and added thermal noise errors. Thus, bosonic quantum error correction is essential. Most bosonic quantum error correction sc...
Non-covalent quantum machine learning corrections to density functionals.
P. Mezei, Anatole van Lilienfeld·Mar 21, 2019
We present non-covalent quantum machine learning corrections to six physically motivated density functionals with systematic errors. We demonstrate that the missing massively non-local and non-additive physical effects can be recovered by the quantum...
readPTU: a python library to analyse time tagged time resolved data
Guillem Ballesteros, R. Proux, C. Bonato +1 more·Mar 17, 2019
readPTU is a python package designed to analyze time-correlated single-photon counting data. The use of the library promotes the storage of the complete time arrival information of the photons and full flexibility in post-processing data for analysis...
A quantum cellular automaton for one-dimensional QED
P. Arrighi, C. Bény, Terry Farrelly·Mar 17, 2019
We propose a discrete spacetime formulation of quantum electrodynamics in one dimension (a.k.a the Schwinger model) in terms of quantum cellular automata, i.e. translationally invariant circuits of local quantum gates. These have exact gauge covarian...
Representation of Boolean functions in terms of quantum computation
Y. Bogdanov, N. Bogdanova, D. V. Fastovets +1 more·Mar 15, 2019
The relationship between quantum physics and discrete mathematics is reviewed in this article. The Boolean functions unitary representation is considered. The relationship between Zhegalkin polynomial, which defines the algebraic normal form of Boole...
Quantum error correction and entanglement phase transition in random unitary circuits with projective measurements
Soonwon Choi, Yimu Bao, X. Qi +1 more·Mar 12, 2019
We analyze the dynamics of entanglement entropy in a generic quantum many-body open system from the perspective of quantum information and error corrections. We introduce a random unitary circuit model with intermittent projective measurements, in wh...