1.4k citations · 2.6k across the 11 of their papers we have counts for
11 papers
Correlated Charge Noise and Relaxation Errors in Superconducting Qubits
C. D. Wilen, S. Abdullah, N. A. Kurinsky +11
The central challenge in building a quantum computer is error correction. Unlike classical bits, which are susceptible to only one type of error, quantum bits ("qubits") are suscep…
Anomalous Charge Noise in Superconducting Qubits
B. G. Christensen, C. D. Wilen, A. Opremcak +9
We have used Ramsey tomography to characterize charge noise in a weakly charge-sensitive superconducting qubit. We find a charge noise that scales with frequency as over 5…
Experimentally Generated Randomness Certified by the Impossibility of Superluminal Signals
Peter Bierhorst, Emanuel Knill, Scott Glancy +9
From dice to modern complex circuits, there have been many attempts to build increasingly better devices to generate random numbers. Today, randomness is fundamental to security an…
An advanced active quenching circuit for ultra-fast quantum cryptography
Mario Stipčević, Bradley G. Christensen, Paul G. Kwiat +1
Commercial photon-counting modules based on actively quenched solid-state avalanche photodiode sensors are used in a wide variety of applications. Manufacturers characterize their…
Experimentally Generated Random Numbers Certified by the Impossibility of Superluminal Signaling
Peter Bierhorst, Emanuel Knill, Scott Glancy +7
Random numbers are an important resource for applications such as numerical simulation and secure communication. However, it is difficult to certify whether a physical random numbe…
A strong loophole-free test of local realism
Lynden K. Shalm, Evan Meyer-Scott, Bradley G. Christensen +31
We present a loophole-free violation of local realism using entangled photon pairs. We ensure that all relevant events in our Bell test are spacelike separated by placing the parti…
A Time-Multiplexed Heralded Single-Photon Source
Fumihiro Kaneda, Bradley G. Christensen, Jia Jun Wong +3
Photons have proven to be excellent carriers of quantum information, and play essential roles in numerous quantum information processing (QIP) applications. In particular, heralded…
Exploring the limits of quantum nonlocality with entangled photons
Bradley G. Christensen, Yeong-Cherng Liang, Nicolas Brunner +2
Quantum nonlocality is arguably among the most counter-intuitive phenomena predicted by quantum theory. In recent years, the development of an abstract theory of nonlocality has br…
Analysis of Coincidence-Time Loopholes in Experimental Bell Tests
B. G. Christensen, A. Hill, P. G. Kwiat +6
We apply a distance-based Bell-test analysis method [E. Knill et al., Phys. Rev. A. 91, 032105 (2015)] to three experimental data sets where conventional analyses failed or require…
Challenging preconceptions about Bell tests with photon pairs
V. Caprara Vivoli, P. Sekatski, J. -D. Bancal +7
Motivated by very recent experiments, we consider a scenario "à la Bell" in which two protagonists test the Clauser-Horne-Shimony-Holt (CHSH) inequality using a photon-pair source…
Detection-Loophole-Free Test of Quantum Nonlocality, and Applications
B. G. Christensen, K. T. McCusker, J. Altepeter +11
We present a source of entangled photons that violates a Bell inequality free of the "fair-sampling" assumption, by over 7 standard deviations. This violation is the first experime…