Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,921 papers in 12 months (-33% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A two-channel, spectrally degenerate polarization entangled source on chip
L. Sansoni, K. Luo, C. Eigner +4 more·Apr 12, 2016
Integrated optics provides the platform for the experimental implementation of highly complex and compact circuits for quantum information applications. In this context integrated waveguide sources represent a powerful resource for the generation of ...
Circular CNOT Circuits: Definition, Analysis and Application to Fault-Tolerant Quantum Circuits
A. Paler·Apr 11, 2016
The work proposes an extension of the quantum circuit formalism where qubits (wires) are circular instead of linear. The left-to-right interpretation of a quantum circuit is replaced by a circular representation which allows to select the starting po...
A transmon quantum annealer: decomposing many-body Ising constraints into pair interactions
M. Leib, P. Zoller, W. Lechner·Apr 8, 2016
Adiabatic quantum computing is an analogue quantum computing scheme with various applications in solving optimisation problems. In the parity picture of quantum optimization, the problem is encoded in local fields that act on qubits that are connecte...
Strengths and weaknesses of weak-strong cluster problems: A detailed overview of state-of-the-art classical heuristics versus quantum approaches
S. Mandrà, Zheng Zhu, Wenlong Wang +2 more·Apr 6, 2016
To date, a conclusive detection of quantum speedup remains elusive. Recently, a team by Google Inc.~[V.~S.~Denchev {\em et al}., Phys.~Rev.~X {\bf 6}, 031015 (2016)] proposed a weak-strong cluster model tailored to have tall and narrow energy barrier...
Quantum Information Processing: A brief overview on Quantum Teleportation
Sovik Roy·Apr 4, 2016
Quantum Information Processing (QIP) exploits the principles of quantum mechanics to perform information storage, communication, and computation in ways that are fundamentally impossible within classical frameworks. This article presents a pedagogica...
Probabilistic bounds on the trapping redundancy of linear codes
Y. Tsunoda, Yuichiro Fujiwara·Apr 4, 2016
The trapping redundancy of a linear code is the number of rows of a smallest parity-check matrix such that no submatrix forms an (a, b)-trapping set. This concept was first introduced in the context of low-density parity-check (LDPC) codes in an atte...
Multi-objective design of quantum circuits using genetic programming
Moein Sarvaghad-Moghaddam·Apr 3, 2016
Quantum computing is a new way of data processing based on the concept of quantum mechanics. Quantum circuit design is a process of converting a quantum gate to a series of basic gates and is divided into two general categories based on the decomposi...
Using Recurrent Neural Networks to Optimize Dynamical Decoupling for Quantum Memory
Moritz August, Xiaotong Ni·Apr 1, 2016
We utilize machine learning models which are based on recurrent neural networks to optimize dynamical decoupling (DD) sequences. DD is a relatively simple technique for suppressing the errors in quantum memory for certain noise models. In numerical s...
Ancilla-input and garbage-output optimized design of a reversible quantum integer multiplier
Jayashree Hv, H. Thapliyal, H. Arabnia +1 more·Apr 1, 2016
A reversible logic has application in quantum computing. A reversible logic design needs resources such as ancilla and garbage qubits to reconfigure circuit functions or gate functions. The removal of garbage qubits and ancilla qubits are essential i...
Quantum Homomorphic Encryption for Polynomial-Sized Circuits
Y. Dulek, Christian Schaffner, F. Speelman·Mar 31, 2016
We present a new scheme for quantum homomorphic encryption which is compact and allows for efficient evaluation of arbitrary polynomial-sized quantum circuits. Building on the framework of Broadbent and Jeffery and recent results in the area of insta...
Circuit design for multi-body interactions in superconducting quantum annealing systems with applications to a scalable architecture
N. Chancellor, S. Zohren, P. Warburton·Mar 31, 2016
Quantum annealing provides a way of solving optimization problems by encoding them as Ising spin models which are implemented using physical qubits. The solution of the optimization problem then corresponds to the ground state of the system. Quantum ...
Reliability of analog quantum simulation
M. Sarovar, Jun Zhang, Lishan Zeng·Mar 30, 2016
Analog quantum simulators (AQS) will likely be the first nontrivial application of quantum technology for predictive simulation. However, there remain questions regarding the degree of confidence that can be placed in the results of AQS since they do...
Estimating the Cost of Generic Quantum Pre-image Attacks on SHA-2 and SHA-3
M. Amy, O. D. Matteo, Vlad Gheorghiu +3 more·Mar 30, 2016
We investigate the cost of Grover’s quantum search algorithm when used in the context of pre-image attacks on the SHA-2 and SHA-3 families of hash functions. Our cost model assumes that the attack is run on a surface code based fault-tolerant quantum...
Error tolerance of topological codes with independent bit-flip and measurement errors
Ruben S. Andrist, H. Katzgraber, H. Bombin +1 more·Mar 29, 2016
Topological quantum error correction codes are currently among the most promising candidates for efficiently dealing with the decoherence effects inherently present in quantum devices. Numerically, their theoretical error threshold can be calculated ...
Post-processing procedure for industrial quantum key distribution systems
E. Kiktenko, A. Trushechkin, Y. Kurochkin +1 more·Mar 28, 2016
We present algorithmic solutions aimed on post-processing procedure for industrial quantum key distribution systems with hardware sifting. The main steps of the procedure are error correction, parameter estimation, and privacy amplification. Authenti...
Basic circuit compilation techniques for an ion-trap quantum machine
D. Maslov·Mar 24, 2016
We study the problem of compilation of quantum algorithms into optimized physical-level circuits executable in a quantum information processing (QIP) experiment based on trapped atomic ions. We report a complete strategy: starting with an algorithm i...
Demonstration of a quantum error correction for enhanced sensitivity of photonic measurements
L. Cohen, Y. Pilnyak, D. Istrati +2 more·Mar 23, 2016
The sensitivity of classical and quantum sensing is impaired in a noisy environment. Thus, one of the main challenges facing sensing protocols is to reduce the noise while preserving the signal. State of the art quantum sensing protocols that rely on...
Communication capacity of mixed quantum t -designs
S. Brandsen, M. Dall’Arno, Anna Szymusiak·Mar 21, 2016
We operationally introduce mixed quantum t-designs as the most general arbitrary-rank extension of projective quantum t-designs which preserves indistinguishability from the uniform distribution for t copies. First, we derive upper bounds on the clas...
Continuous-Wave Single-Photon Transistor Based on a Superconducting Circuit.
O. Kyriienko, A. Sørensen·Mar 21, 2016
We propose a microwave frequency single-photon transistor which can operate under continuous wave probing and represents an efficient single microwave photon detector. It can be realized using an impedance matched system of a three level artificial l...
Crosstalk-insensitive method for simultaneously coupling multiple pairs of resonators
Chuiping Yang, Qi-Ping Su, Shi-Biao Zheng +1 more·Mar 19, 2016
In a circuit consisting of two or more resonators, the inter-cavity crosstalk is inevitable, which could create some problems, such as degrading the performance of quantum operations and the fidelity of various quantum states. The focus of this work ...