7.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of TorontoCA627 papers
- University of British ColumbiaCA288 papers
- McMaster UniversityCA283 papers
- Université de SherbrookeCA270 papers
- University of WaterlooCA265 papers
- Perimeter InstituteCA261 papers
- Canadian Institute for Theoretical AstrophysicsCA233 papers
- California Institute of TechnologyUS198 papers
- McGill UniversityCA193 papers
- Centre National de la Recherche ScientifiqueFR179 papers
- University of California, BerkeleyUS166 papers
- University of Illinois Urbana-ChampaignUS161 papers
34 papers · 2 filters
Deterministic Quantum State Transfer and Generation of Remote Entanglement using Microwave Photons
Philipp Kurpiers, Paul Magnard, Theo Walter +10
Sharing information coherently between nodes of a quantum network is at the foundation of distributed quantum information processing. In this scheme, the computation is divided int…
On the CNOT-complexity of CNOT-PHASE circuits
Matthew Amy, Parsiad Azimzadeh, Michele Mosca
We study the problem of CNOT-optimal quantum circuit synthesis over gate sets consisting of CNOT and Z-basis rotations of arbitrary angles. We show that the circuit-polynomial corr…
Entanglement, non-Markovianity, and causal non-separability
Simon Milz, Felix A. Pollock, Thao P. Le +2
Quantum mechanics, in principle, allows for processes with indefinite causal order. However, most of these causal anomalies have not yet been detected experimentally. We show that…
Low field nuclear polarization using Nitrogen Vacancy centers in diamonds
Yonatan Hovav, Boris Naydenov, Fedor Jelezko +1
It was recently demonstrated that bulk nuclear polarization can be obtained using Nitrogen Vacancy (NV) color centers in diamonds, even at ambient conditions. This is based on the…
Quantum Algorithm for Spectral Measurement with Lower Gate Count
David Poulin, Alexei Kitaev, Damian S. Steiger +2
We present two techniques that can greatly reduce the number of gates required to realize an energy measurement, with application to ground state preparation in quantum simulations…
Efficient Code for Relativistic Quantum Summoning
Ya-Dong Wu, Abdullah Khalid, Barry C. Sanders
Summoning retrieves quantum information, prepared somewhere in spacetime, at another specified point in spacetime, but this task is limited by the quantum no-cloning principle and…
Test one to test many: a unified approach to quantum benchmarks
Ge Bai, Giulio Chiribella
Quantum benchmarks are routinely used to validate the experimental demonstration of quantum information protocols. Many relevant protocols, however, involve an infinite set of inpu…
Enhanced communication with the assistance of indefinite causal order
Daniel Ebler, Sina Salek, Giulio Chiribella
In quantum Shannon theory, the way information is encoded and decoded takes advantage of the laws of quantum mechanics, while the way communication channels are interlinked is assu…
Coherent storage and manipulation of broadband photons via dynamically controlled Autler-Townes splitting
Erhan Saglamyurek, Taras Hrushevskyi, Anindya Rastogi +2
The coherent control of light with matter, enabling storage and manipulation of optical signals, was revolutionized by electromagnetically induced transparency (EIT), which is a qu…
Itinerant microwave photon detector
Baptiste Royer, Arne L. Grimsmo, Alexandre Choquette-Poitevin +1
The realization of a high-efficiency microwave single photon detector is a long-standing problem in the field of microwave quantum optics. Here we propose a quantum non-demolition,…
Detecting topological invariants in nonunitary discrete-time quantum walks
Xiang Zhan, Lei Xiao, Zhihao Bian +5
We report the experimental detection of bulk topological invariants in nonunitary discrete-time quantum walks with single photons. The nonunitarity of the quantum dynamics is enfor…
Random Invariant Tensors
Youning Li, Muxin Han, Dong Ruan +1
Invariant tensors are states in the (local) SU(2) tensor product representation but invariant under global SU(2) action. They are of importance in the study of loop quantum gravity…
Parallel lives: A local-realistic interpretation of "nonlocal" boxes
Gilles Brassard, Paul Raymond-Robichaud
We carry out a thought experiment in an imaginary world. Our world is both local and realistic, yet it violates a Bell inequality more than does quantum theory. This serves to debu…
Permutational symmetries for coincidence rates in multi-mode multi-photonic interferometry
Abdullah Khalid, Dylan Spivak, Barry C. Sanders +1
We obtain coincidence rates for passive optical interferometry by exploiting the permutational symmetries of partially distinguishable input photons, and our approach elucidates qu…
qTorch: The Quantum Tensor Contraction Handler
E. Schuyler Fried, Nicolas P. D. Sawaya, Yudong Cao +3
Classical simulation of quantum computation is necessary for studying the numerical behavior of quantum algorithms, as there does not yet exist a large viable quantum computer on w…
Relativistic (2,3)-threshold quantum secret sharing
Mehdi Ahmadi, Ya-Dong Wu, Barry C. Sanders
In quantum secret sharing protocols, the usual presumption is that the distribution of quantum shares and players' collaboration are both performed inertially. Here we develop a qu…
Coherence properties of the 0- qubit
Peter Groszkowski, A. Di Paolo, A. L. Grimsmo +4
Superconducting circuits rank among the most interesting architectures for the implementation of quantum information processing devices. The recently proposed 0- qubit [Brooks e…
Enhancing qubit readout through dissipative sub-Poissonian dynamics
Benjamin D'Anjou, William A. Coish
Single-shot qubit readout typically combines high readout contrast with long-lived readout signals, leading to large signal-to-noise ratios and high readout fidelities. In recent y…
Effect of higher-order nonlinearities on amplification and squeezing in Josephson parametric amplifiers
Samuel Boutin, David M. Toyli, Aditya V. Venkatramani +3
Single-mode Josephson junction-based parametric amplifiers are often modeled as perfect amplifiers and squeezers. We show that, in practice, the gain, quantum efficiency, and outpu…
Strong Coherent Light Amplification with Double Electromagnetically Induced Transparency Coherences
Dan Wang, Chao Liu, Changshun Xiao +5
We experimentally demonstrate coherent amplification of probe field in a tripod-type atoms driven by strong coupling, signal and weak probe fields. We suppress linear and nonlinear…
Experimental Blind Quantum Computing for a Classical Client
He-Liang Huang, Qi Zhao, Xiongfeng Ma +8
To date, blind quantum computing demonstrations require clients to have weak quantum devices. Here we implement a proof-of-principle experiment for completely classical clients. Vi…
Entanglement-enhanced quantum metrology in a noisy environment
Kunkun Wang, Xiaoping Wang, Xiang Zhan +4
Quantum metrology overcomes standard precision limits and plays a central role in science and technology. Practically it is vulnerable to imperfections such as decoherence. Here, w…
Units of rotational information
Yuxiang Yang, Giulio Chiribella, Qinheping Hu
Entanglement in angular momentum degrees of freedom is a precious resource for quantum metrology and control. Here we study the conversions of this resource, focusing on Bell pairs…
Widely tunable on-chip microwave circulator for superconducting quantum circuits
Benjamin J. Chapman, Eric I. Rosenthal, Joseph Kerckhoff +6
We report on the design and performance of an on-chip microwave circulator with a widely (GHz) tunable operation frequency. Non-reciprocity is created with a combination of frequen…