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

2.8k citations

Showing 2016 · quant-phShow all

23 papers · 2 filters

quant-ph2016★ 197 cited

Scalable quantum circuit and control for a superconducting surface code

R. Versluis, S. Poletto, N. Khammassi +5

We present a scalable scheme for executing the error-correction cycle of a monolithic surface-code fabric composed of fast-flux-tuneable transmon qubits with nearest-neighbor coupl…

quant-ph2016★ 2 cited

Heralded Amplification of Path Entangled Quantum States

F. Monteiro, E. Verbanis, V. Caprara Vivoli +4

Device-independent quantum key distribution (DI-QKD) represents one of the most fascinating challenges in quantum communication, exploiting concepts of fundamental physics, namely…

quant-ph2016★ 59 cited

Design and low-temperature characterization of a tunable microcavity for diamond-based quantum networks

S. Bogdanovic, S. B. van Dam, C. Bonato +8

We report on the fabrication and characterization of a Fabry-Perot microcavity enclosing a thin diamond membrane at cryogenic temperatures. The cavity is designed to enhance resona…

quant-ph2016★ 25 cited

Capacity estimation and verification of quantum channels with arbitrarily correlated errors

Corsin Pfister, M. Adriaan Rol, Atul Mantri +2

One of the main figures of merit for quantum memories and quantum communication devices is their quantum capacity. It has been studied for arbitrary kinds of quantum channels, but…

quant-ph2016★ 80 cited

Restless Tuneup of High-Fidelity Qubit Gates

M. A. Rol, C. C. Bultink, T. E. O'Brien +11

We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constru…

quant-ph2016★ 204 cited

Experimentally simulating the dynamics of quantum light and matter at ultrastrong coupling

N. K. Langford, R. Sagastizabal, M. Kounalakis +6

The quantum Rabi model describing the fundamental interaction between light and matter is a cornerstone of quantum physics. It predicts exotic phenomena like quantum phase transiti…

quant-ph2016★ 17 cited

Representations of the multi-qubit Clifford group

Jonas Helsen, Joel J. Wallman, Stephanie Wehner

The Clifford group is a fundamental structure in quantum information with a wide variety of applications. We discuss the tensor representations of the -qubit Clifford group, whi…

quant-ph2016★ 53 cited

Genuine-multipartite entanglement criteria based on positive maps

Fabien Clivaz, Marcus Huber, Ludovico Lami +1

Positive maps applied to a subsystem of a bipartite quantum state constitute a central tool in characterising entanglement. In the multipartite case, however, the direct applicatio…

quant-ph2016★ 25 cited

Dynamical maps, quantum detailed balance and Petz recovery map

Álvaro M. Alhambra, Mischa P. Woods

Markovian master equations (formally known as quantum dynamical semigroups) can be used to describe the evolution of a quantum state when in contact with a memoryless thermal b…

quant-ph2016★ 131 cited

Autonomous quantum clocks: does thermodynamics limit our ability to measure time?

Paul Erker, Mark T. Mitchison, Ralph Silva +3

Time remains one of the least well understood concepts in physics, most notably in quantum mechanics. A central goal is to find the fundamental limits of measuring time. One of the…

quant-ph2016★ 7 cited

On the tightness of correlation inequalities with no quantum violation

Ravishankar Ramanathan, Marco Túlio Quintino, Ana Belén Sainz +2

We study the faces of the set of quantum correlations, i.e., the Bell and noncontextuality inequalities without any quantum violation. First, we investigate the question whether ev…

quant-ph2016★ 24 cited

Device-independence for two-party cryptography and position verification

Jeremy Ribeiro, Le Phuc Thinh, Jedrzej Kaniewski +2

Quantum communication has demonstrated its usefulness for quantum cryptography far beyond quantum key distribution. One domain is two-party cryptography, whose goal is to allow two…

quant-ph2016★ 27 cited

Surpassing the Carnot Efficiency by extracting imperfect work

Nelly Huei Ying Ng, Mischa Woods, Stephanie Wehner

A suitable way of quantifying work for microscopic quantum systems has been constantly debated in the field of quantum thermodynamics. One natural approach is to measure the averag…

quant-ph2016★ 9 cited

Quantum preparation uncertainty and lack of information

Filip Rozpędek, Jędrzej Kaniewski, Patrick J. Coles +1

The quantum uncertainty principle famously predicts that there exist measurements that are inherently incompatible, in the sense that their outcomes cannot be predicted simultaneou…

quant-ph2016★ 6 cited

Non-convexity of private capacity and classical environment-assisted capacity of a quantum channel

David Elkouss, Sergii Strelchuk

The capacity of classical channels is convex. This is not the case for the quantum capacity of a channel: the capacity of a mixture of different quantum channels exceeds the mixtur…

quant-ph2016★ 81 cited

Active resonator reset in the nonlinear dispersive regime of circuit QED

C. C. Bultink, M. A. Rol, T. E. O'Brien +8

We present two pulse schemes for actively depleting measurement photons from a readout resonator in the nonlinear dispersive regime of circuit QED. One method uses digital feedback…

quant-ph2016★ 99 cited

Loophole-free Bell test using electron spins in diamond: second experiment and additional analysis

B. Hensen, N. Kalb, M. S. Blok +11

The recently reported violation of a Bell inequality using entangled electronic spins in diamonds (Hensen et al., Nature 526, 682-686) provided the first loophole-free evidence aga…

quant-ph2016★ 43 cited

Quantum Zeno subspaces by repeated multi-spin projections

Norbert Kalb, Julia Cramer, Matthew Markham +3

Repeated observations inhibit the coherent evolution of quantum states through the quantum Zeno effect. In multi-qubit systems this effect provides new opportunities to control com…

quant-ph2016★ 115 cited

Robust quantum-network memory using decoherence-protected subspaces of nuclear spins

Andreas Reiserer, Norbert Kalb, Machiel S. Blok +5

The realization of a network of quantum registers is an outstanding challenge in quantum science and technology. We experimentally investigate a network node that consists of a sin…

quant-ph2016★ 76 cited

Realising a quantum absorption refrigerator with an atom-cavity system

Mark T. Mitchison, Marcus Huber, Javier Prior +2

An autonomous quantum thermal machine comprising a trapped atom or ion placed inside an optical cavity is proposed and analysed. Such a machine can operate as a heat engine whose w…

quant-ph2016★ 60 cited

Contextuality without nonlocality in a superconducting quantum system

Markus Jerger, Yarema Reshitnyk, Markus Oppliger +8

Classical realism demands that system properties exist independently of whether they are measured, while noncontextuality demands that the results of measurements do not depend on…

quant-ph2016★ 6 cited

Certified Randomness from a Two-Level System in a Relativistic Quantum Field

Le Phuc Thinh, Jean-Daniel Bancal, Eduardo Martin-Martinez

Randomness is an indispensable resource in modern science and information technology. Fortunately, an experimentally simple procedure exists to generate randomness with well-charac…

quant-ph2016★ 40 cited

Device-independent two-party cryptography secure against sequential attacks

Jędrzej Kaniewski, Stephanie Wehner

The goal of two-party cryptography is to enable two parties, Alice and Bob, to solve common tasks without the need for mutual trust. Examples of such tasks are private access to a…