Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,590 papers in 12 months (-18% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Introduction to Coding Quantum Algorithms: A Tutorial Series Using Qiskit
Daniel Koch, L. Wessing, P. Alsing·Mar 7, 2019
As the field of Quantum Computing continues to grow, so too has the general public’s interest in testing some of the publicly available quantum computers. However, many might find learning all of the supplementary information that goes into quantum a...
Introduction to Coding Quantum Algorithms: A Tutorial Series Using Pyquil
Daniel Koch, L. Wessing, P. Alsing·Mar 7, 2019
As the field of Quantum Computing continues to grow, so too has the general public's interest in testing some of the publicly available quantum computers. However, many might find learning all of the supplementary information that goes into quantum a...
Information-theoretic aspects of the generalized amplitude-damping channel
Sumeet Khatri, Kunal Sharma, M. Wilde·Mar 5, 2019
The generalized amplitude damping channel (GADC) is one of the sources of noise in superconducting-circuit-based quantum computing. It can be viewed as the qubit analogue of the bosonic thermal channel, and it thus can be used to model lossy processe...
Bounding and Estimating the Classical Information Rate of Quantum Channels With Memory
Michael X. Cao, P. Vontobel·Mar 1, 2019
We consider the scenario of classical communication over a finite-dimensional quantum channel with memory using a separable-state input ensemble and local output measurements. We propose algorithms for estimating the information rate of such communic...
Multipartite Entanglement Generation and Contextuality Tests Using Nondestructive Three-Qubit Parity Measurements.
S. V. Dam, J. Cramer, T. Taminiau +1 more·Feb 23, 2019
We report on the realization and application of nondestructive three-qubit parity measurements on nuclear spin qubits in diamond. We use high-fidelity quantum logic to map the parity of the joint state of three nuclear spin qubits onto an electronic ...
Deep reinforcement learning for quantum gate control
Zheng An, Duan-Lu Zhou·Feb 22, 2019
How to implement multi-qubit gates efficiently with high precision is essential for realizing universal fault-tolerant computing. For a physical system with some external controllable parameters, it is a great challenge to control the time dependence...
Universality of EPR pairs in entanglement-assisted communication complexity, and the communication cost of state conversion
Matthew Coudron, A. Harrow·Feb 20, 2019
In this work we consider the role of entanglement assistance in quantum communication protocols, focusing, in particular, on whether the type of shared entangled state can affect the quantum communication complexity of a function. This question is in...
Three-qubit exact Grover within the blind oracular quantum computation scheme
Cica Gustiani, D. DiVincenzo·Feb 14, 2019
Here we extend the concept of blind client-server quantum computation, in which a client with limited quantum power controls the execution of a quantum computation on a powerful server, without revealing any details of the computation. Our extension ...
Multi-matrix error estimation and reconciliation for quantum key distribution.
Chaohui Gao, Dong Jiang, Yu Guo +1 more·Feb 14, 2019
Post-processing is a significant step in quantum key distribution (QKD), which is used for correcting the quantum-channel noise errors and distilling identical corrected keys between two distant legitimate parties. Efficient error reconciliation prot...
A quantum compiler for qudits of prime dimension greater than 3.
Luke E Heyfron, E. Campbell·Feb 14, 2019
Prevailing proposals for the first generation of quantum computers make use of 2-level systems, or qubits, as the fundamental unit of quantum information. However, recent innovations in quantum error correction and magic state distillation protocols ...
Optimal measurement strategies for fast entanglement detection
N. Milazzo, D. Braun, O. Giraud·Feb 13, 2019
With the advance of quantum information technology, the question of how to most efficiently test quantum circuits is becoming of increasing relevance. Here we introduce the statistics of lengths of measurement sequences that allows one to certify ent...
High-Speed, Low-Crosstalk Detection of a Trapped $^{171}$Yb$^+$ Ion Ancilla Qubit using Superconducting Nanowire Single Photon Detectors
S. Crain, Clinton Cahall, Geert Vrijsen +5 more·Feb 11, 2019
Qubits used in quantum computing tend to suffer from errors, either from the qubit interacting with the environment, or from imperfect control when quantum logic gates are applied. Fault-tolerant construction based on quantum error correcting codes (...
Entanglement wedge reconstruction using the Petz map
Chi-Fang Chen, Geoffrey Penington, Grant Salton·Feb 7, 2019
At the heart of recent progress in AdS/CFT is the question of subregion duality, or entanglement wedge reconstruction: which part(s) of the boundary CFT are dual to a given subregion of the bulk? This question can be answered by appealing to the quan...
Clifford recompilation for faster classical simulation of quantum circuits
Hammam Qassim, Joel J. Wallman, J. Emerson·Feb 6, 2019
Simulating quantum circuits classically is an important area of research in quantum information, with applications in computational complexity and validation of quantum devices. One of the state-of-the-art simulators, that of Bravyi et al, utilizes a...
Neural Decoder for Topological Codes using Pseudo-Inverse of Parity Check Matrix
C. Chinni, Abhishek Kulkarni, Dheeraj M. Pai +2 more·Jan 21, 2019
Recent developments in the field of deep learning have motivated many researchers to apply these methods to problems in quantum information. Torlai and Melko first proposed a decoder for surface codes based on neural networks. Since then, many other ...
Phase-engineered bosonic quantum codes
Linshu Li, Dylan J. Young, Victor V. Albert +3 more·Jan 16, 2019
Continuous-variable systems protected by bosonic quantum error-correcting codes have emerged as a promising platform for quantum information processing. To date, design of codewords has centered on optimizing the occupation of basis states in the err...
Quantum-Teleportation-Inspired Algorithm for Sampling Large Random Quantum Circuits.
Ming-Cheng Chen, Riling Li, L. Gan +4 more·Jan 15, 2019
Quantum teleportation transfers and processes quantum information through quantum entanglement channels. It is one of the most versatile protocols in quantum information science and leads to many remarkable applications, particularly the one-way quan...
Analytically Computable Symmetric Quantum Correlations
Li-qiang Zhang, Si-ren Yang, Chang-shui Yu·Jan 15, 2019
One of the greatest challenges in developing the resource theory of a quantum feature is to establish an analytically computable quantifier, which directly limits the practicability of such quantifiers. Here, analytic quantifiers of both the symmetri...
Quantum computing with sine-Gordon qubits
Dongsheng Wang·Jan 14, 2019
A universal quantum computing scheme, with a universal set of logical gates, is proposed based on networks of 1D quantum systems. The encoding of information is in terms of universal features of gapped phases, for which effective field theories such ...
Circuit-Based Quantum Random Access Memory for Classical Data
D. Park, Francesco Petruccione, J. Rhee·Jan 8, 2019
A prerequisite for many quantum information processing tasks to truly surpass classical approaches is an efficient procedure to encode classical data in quantum superposition states. In this work, we present a circuit-based flip-flop quantum random a...