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
Distributed Quantum Computing Utilizing Multiple Codes on Imperfect Hardware
Shota Nagayama·Apr 9, 2017
Quantum bits have technological imperfections. Additionally, the capacity of a component that can be implemented feasibly is limited. Therefore, distributed quantum computation is required to scale up quantum computers. This dissertation presents a ...
Quantum advantage with shallow circuits
S. Bravyi, David Gosset, R. König·Apr 3, 2017
Quantum outperforms classical Quantum computers are expected to be better at solving certain computational problems than classical computers. This expectation is based on (well-founded) conjectures in computational complexity theory, but rigorous com...
Information Theoretically Secure Hypothesis Test for Temporally Unstructured Quantum Computation (Extended Abstract)
Daniel Mills, Anna Pappa, Theodoros Kapourniotis +1 more·Apr 1, 2017
The efficient certification of classically intractable quantum devices has been a central research question for some time. However, to observe a "quantum advantage", it is believed that one does not need to build a large scale universal quantum compu...
Implementation of a quantum controlled-SWAP gate with photonic circuits
T. Ono, R. Okamoto, Masato Tanida +2 more·Mar 31, 2017
Quantum information science addresses how the processing and transmission of information are affected by uniquely quantum mechanical phenomena. Combination of two-qubit gates has been used to realize quantum circuits, however, scalability is becoming...
Experimental realization of single-shot nonadiabatic holonomic gates in nuclear spins
Hang Li, Yang Liu, Guilu Long·Mar 30, 2017
Nonadiabatic holonomic quantum computation has received increasing attention due to its robustness against control errors. However, all the previous schemes have to use at least two sequentially implemented gates to realize a general one-qubit gate. ...
Complete 3-Qubit Grover search on a programmable quantum computer
C. Figgatt, D. Maslov, D. Maslov +4 more·Mar 30, 2017
The Grover quantum search algorithm is a hallmark application of a quantum computer with a well-known speedup over classical searches of an unsorted database. Here, we report results for a complete three-qubit Grover search algorithm using the scalab...
Error-Transparent Quantum Gates for Small Logical Qubit Architectures.
E. Kapit·Mar 28, 2017
One of the largest obstacles to building a quantum computer is gate error, where the physical evolution of the state of a qubit or group of qubits during a gate operation does not match the intended unitary transformation. Gate error stems from a com...
Quantum Spectral Clustering through a Biased Phase Estimation Algorithm
A. Daskin·Mar 16, 2017
In this brief paper, we go through the theoretical steps of the spectral clustering on quantum computers by employing the phase estimation and the amplitude amplification algorithms. We discuss circuit designs for each step and show how to obtain the...
Robust quantum gates for stochastic time-varying noise
Chia-Hsien Huang, H. Goan·Mar 15, 2017
How to effectively construct robust quantum gates for time-varying noise is a very important but still outstanding problem. Here we develop a systematic method to find pulses for quantum gate operations robust against both low- and high-frequency (co...
Measurement-free implementations of small-scale surface codes for quantum-dot qubits
H. Ekmel Ercan, J. Ghosh, D. Crow +4 more·Mar 13, 2017
The performance of quantum error correction schemes depends sensitively on the physical realizations of the qubits and the implementations of various operations. For example, in quantum dot spin qubits, readout is typically much slower than gate oper...
Encoding qubits into oscillators with atomic ensembles and squeezed light
Keith R. Motes, B. Baragiola, A. Gilchrist +1 more·Mar 6, 2017
The Gottesman-Kitaev-Preskill (GKP) encoding of a qubit within an oscillator provides a number of advantages when used in a fault-tolerant architecture for quantum computing, most notably that Gaussian operations suffice to implement all single- and ...
Modeling the atomtronic analog of an optical polarizing beam splitter, a half-wave plate, and a quarter-wave plate for phonons of the motional state of two trapped atoms
N. Mohseni, M. Fani, J. Dowling +1 more·Mar 5, 2017
In this paper we propose a scheme to model the phonon analog of optical elements, including a polarizing beam splitter, a half- wave plate, and a quarter- wave plate, as well as an implementation of CNOT and Pauli gates, by using two atoms confined i...
Towards topological quantum computer
Dmitry Melnikov, Dmitry Melnikov, A. Mironov +4 more·Mar 1, 2017
Abstract Quantum R-matrices, the entangling deformations of non-entangling (classical) permutations, provide a distinguished basis in the space of unitary evolutions and, consequently, a natural choice for a minimal set of basic operations (universal...
Dissipative quantum error correction and application to quantum sensing with trapped ions
F. Reiter, A. Sørensen, P. Zoller +1 more·Feb 28, 2017
Quantum-enhanced measurements hold the promise to improve high-precision sensing ranging from the definition of time standards to the determination of fundamental constants of nature. However, quantum sensors lose their sensitivity in the presence of...
Work sharing of qubits in topological error corrections
T. Tanamoto, Hayato Goto·Feb 26, 2017
Topological error-correcting codes, such as surface codes and color codes, are promising because quantum operations are realized by two-dimensionally (2D) arrayed quantum bits (qubits). However, physical wiring of electrodes to qubits is complicated,...
What Randomized Benchmarking Actually Measures.
T. Proctor, K. Rudinger, K. Young +2 more·Feb 7, 2017
Randomized benchmarking (RB) is widely used to measure an error rate of a set of quantum gates, by performing random circuits that would do nothing if the gates were perfect. In the limit of no finite-sampling error, the exponential decay rate of the...
Non-Abelian holonomic transformation in the presence of classical noise
J. Jing, C. Lam, L. -A. Wu·Jan 27, 2017
It is proposed that high-speed universal quantum gates can be realized by using non-Abelian holonomic transformation. A cyclic evolution path which brings the system periodically back to a degenerate qubit subspace is crucial to holonomic quantum com...
Electrically driving nuclear spin qubits with microwave photonic bangap resonators
A. Sigillito, A. Tyryshkin, T. Schenkel +2 more·Jan 23, 2017
The electronic and nuclear spin degrees of freedom for donor impurities in semiconductors form ultra coherent two-level systems that are useful for quantum information applications. Spins naturally have magnetic dipoles, so alternating current (AC) m...
Verified measurement-based quantum computing with hypergraph states
T. Morimae, Yuki Takeuchi, Masahito Hayashi·Jan 20, 2017
Hypergraph states are generalizations of graph states where controlled-$Z$ gates on edges are replaced with generalized controlled-$Z$ gates on hyperedges. Hypergraph states have several advantages over graph states. For example, certain hypergraph s...
Minimization of Quantum Circuits using Quantum Operator Forms
M. Lukac, M. Kameyama, M. Perkowski +1 more·Jan 8, 2017
In this paper we present a method for minimizing reversible quantum circuits using the Quantum Operator Form (QOF); a new representation of quantum circuit and of quantum-realized reversible circuits based on the CNOT, CV and CV$^\dagger$ quantum gat...