output
20132026
most citedExperimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km

2.8k citations

Showing 2018 · quant-phShow all

36 papers · 2 filters

quant-ph2018★ 41 cited

Fundamental limits on the capacities of bipartite quantum interactions

Stefan Bäuml, Siddhartha Das, Mark M. Wilde

Bipartite quantum interactions have applications in a number of different areas of quantum physics, reaching from fundamental areas such as quantum thermodynamics and the theory of…

quant-ph2018★ 11 cited

Hamiltonian quantum computing with superconducting qubits

Alessandro Ciani, Barbara M. Terhal, David P. DiVincenzo

We consider how the Hamiltonian Quantum Computing scheme introduced in [arXiv:1509.01278] can be implemented using a 2D array of superconducting transmon qubits. We show how the sc…

quant-ph2018★ 56 cited

Code Deformation and Lattice Surgery Are Gauge Fixing

Christophe Vuillot, Lingling Lao, Ben Criger +3

The large-scale execution of quantum algorithms requires basic quantum operations to be implemented fault-tolerantly. The most popular technique for accomplishing this, using the d…

quant-ph2018★ 133 cited

Benchmarking Gate Fidelities in a Si/SiGe Two-Qubit Device

X. Xue, T. F. Watson, J. Helsen +7

We report the first complete characterization of single-qubit and two-qubit gate fidelities in silicon-based spin qubits, including cross-talk and error correlations between the tw…

quant-ph2018★ 2 cited

Consequences of unitary evolution of coupled qubit-resonator systems for stabilizing circuits in surface codes

H. W. L. Naus, R. Versluis

Surface codes based on stabilizer circuits may pave the way for large scale fault-tolerant quantum computation. The surface code uses only single- and two-qubit gates and the error…

quant-ph2018★ 50 cited

Towards a realization of device-independent quantum key distribution

Gláucia Murta, Suzanne B. van Dam, Jérémy Ribeiro +2

In the implementation of device-independent quantum key distribution we are interested in maximizing the key rate, i.e. the number of key bits that can be obtained per signal, for…

quant-ph2018★ 9 cited

Every entangled state provides an advantage in classical communication

Stefan Bäuml, Andreas Winter, Dong Yang

We investigate the use of noisy entanglement as a resource in classical communication via a quantum channel. In particular, we are interested in the question whether for any entang…

quant-ph2018★ 143 cited

Quantum Error Correction with the Toric-GKP Code

Christophe Vuillot, Hamed Asasi, Yang Wang +2

We examine the performance of the single-mode GKP code and its concatenation with the toric code for a noise model of Gaussian shifts, or displacement errors. We show how one can o…

quant-ph2018★ 60 cited

Quantum codes for quantum simulation of Fermions on a square lattice of qubits

Mark Steudtner, Stephanie Wehner

Quantum simulation of fermionic systems is a promising application of quantum computers, but in order to program them, we need to map fermionic states and operators to qubit states…

quant-ph2018★ 8 cited

Quantum Simulation and Optimization in Hot Quantum Networks

Martin J. A. Schuetz, Benoît Vermersch, Gerhard Kirchmair +4

We propose and analyze a setup based on (solid-state) qubits coupled to a common multi-mode transmission line, which allows for coherent spin-spin interactions over macroscopic on-…

quant-ph2018★ 177 cited

Quantum phase estimation of multiple eigenvalues for small-scale (noisy) experiments

T. E. O'Brien, B. Tarasinski, B. M. Terhal

Quantum phase estimation is the workhorse behind any quantum algorithm and a promising method for determining ground state energies of strongly correlated quantum systems. Low-cost…

quant-ph2018★ 34 cited

Neural Network Decoders for Large-Distance 2D Toric Codes

Xiaotong Ni

We still do not have perfect decoders for topological codes that can satisfy all needs of different experimental setups. Recently, a few neural network based decoders have been stu…

quant-ph2018★ 29 cited

Linear programs for entanglement and key distribution in the quantum internet

Stefan Bäuml, Koji Azuma, Go Kato +1

Quantum networks will allow to implement communication tasks beyond the reach of their classical counterparts. A pressing and necessary issue for the design of quantum network prot…

quant-ph2018★ 139 cited

Near-term quantum-repeater experiments with nitrogen-vacancy centers: Overcoming the limitations of direct transmission

Filip Rozpędek, Raja Yehia, Kenneth Goodenough +5

Quantum channels enable the implementation of communication tasks inaccessible to their classical counterparts. The most famous example is the distribution of secret key. However,…

quant-ph2018★ 21 cited

Efficient Unitarity Randomized Benchmarking of Few-qubit Clifford Gates

Bas Dirkse, Jonas Helsen, Stephanie Wehner

Unitarity randomized benchmarking (URB) is an experimental procedure for estimating the coherence of implemented quantum gates independently of state preparation and measurement er…

quant-ph2018★ 14 cited

Practical and reliable error bars for quantum process tomography

Le Phuc Thinh, Philippe Faist, Jonas Helsen +2

Current techniques in quantum process tomography typically return a single point estimate of an unknown process based on a finite albeit large amount of measurement data. Due to st…

quant-ph2018★ 251 cited

Low-cost error mitigation by symmetry verification

X. Bonet-Monroig, R. Sagastizabal, M. Singh +1

We investigate the performance of error mitigation via measurement of conserved symmetries on near-term devices. We present two protocols to measure conserved symmetries during the…

quant-ph2018★ 2 cited

Rent's rule and extensibility in quantum computing

David P. Franke, James S. Clarke, Lieven M. K. Vandersypen +1

Quantum computing is on the verge of a transition from fundamental research to practical applications. Yet, to make the step to large-scale quantum computation, an extensible qubit…

quant-ph2018★ 31 cited

Optimal design of diamond-air microcavities for quantum networks using an analytical approach

Suzanne B. van Dam, Maximilian Ruf, Ronald Hanson

Defect centers in diamond are promising building blocks for quantum networks thanks to a long-lived spin state and bright spin-photon interface. However, their low fraction of emis…

quant-ph2018★ 86 cited

Anonymous transmission in a noisy quantum network using the W state

Victoria Lipinska, Gláucia Murta, Stephanie Wehner

We consider the task of anonymously transmitting a quantum message in a network. We present a protocol that accomplishes this task using the W state and we analyze its performance…

quant-ph2018★ 23 cited

Two-local qubit Hamiltonians: when are they stoquastic?

Joel Klassen, Barbara M. Terhal

We examine the problem of determining if a 2-local Hamiltonian is stoquastic by local basis changes. We analyze this problem for two-qubit Hamiltonians, presenting some basic tools…

quant-ph2018★ 45 cited

Transforming graph states using single-qubit operations

Axel Dahlberg, Stephanie Wehner

Stabilizer states form an important class of states in quantum information, and are of central importance in quantum error correction. Here, we provide an algorithm for deciding wh…

quant-ph2018★ 10 cited

High fidelity GHZ generation within nearby nodes

Valentina Caprara Vivoli, Jérémy Ribeiro, Stephanie Wehner

Generating entanglement in a distributed scenario is a fundamental task for implementing the quantum network of the future. We here report a protocol that uses only linear optics f…

quant-ph2018★ 15 cited

Converse bounds for quantum and private communication over Holevo-Werner channels

Thomas P. W. Cope, Kenneth Goodenough, Stefano Pirandola

Werner states have a host of interesting properties, which often serve to illuminate the unusual properties of quantum information. Starting from these states, one may define a fam…