Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,922 papers in 12 months (-33% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Normal-metal quasiparticle traps for superconducting qubits
R. Riwar, R. Riwar, A. Hosseinkhani +6 more·Jun 14, 2016
Superconducting qubits are among the most promising elements for the implementation of the concept of quantum computing. Quasiparticles are an intrinsic sources of qubit decoherence, and are more generally detrimental to the operation of superconduct...
Surface code fidelity at finite temperatures
E. Novais, A. Stanforth, E. Mucciolo·Jun 10, 2016
We study the dependence of the fidelity of the surface code in the presence of a single finite-temperature massless bosonic environment after a quantum error correction cycle. The three standard types of environment are considered: super-Ohmic, Ohmic...
A photonic platform for donor spin qubits in silicon
K. Morse, Rohan J. S. Abraham, Adam DeAbreu +8 more·Jun 10, 2016
Chalcogen donors in silicon enable a scalable photonic cavity quantum electrodynamics solution for universal quantum computing. Donor spins in silicon are highly competitive qubits for upcoming quantum technologies, offering complementary metal-oxide...
Corrected quantum walk for optimal Hamiltonian simulation
D. Berry, Leonardo Novo·Jun 10, 2016
We describe a method to simulate Hamiltonian evolution on a quantum computer by repeatedly using a superposition of steps of a quantum walk, then applying a correction to the weightings for the numbers of steps of the quantum walk. This correction en...
Large Stark tuning of donor electron spin qubits in germanium
A. Sigillito, A. Tyryshkin, J. Beeman +4 more·Jun 10, 2016
Author(s): Sigillito, AJ; Tyryshkin, AM; Beeman, JW; Haller, EE; Itoh, KM; Lyon, SA | Abstract: © 2016 American Physical Society. Donor electron spins in semiconductors make exceptional qubits because of their long coherence times and compatibility w...
Mixing Properties of Stochastic Quantum Hamiltonians
E. Onorati, O. Buerschaper, M. Kliesch +5 more·Jun 6, 2016
Random quantum processes play a central role both in the study of fundamental mixing processes in quantum mechanics related to equilibration, thermalisation and fast scrambling by black holes, as well as in quantum process design and quantum informat...
A unified framework for magic state distillation and multi-qubit gate-synthesis with reduced resource cost
Earl T. Campbell, Mark Howard·Jun 6, 2016
The standard approach to fault-tolerant quantum computation is to store information in a quantum error correction code, such as the surface code, and process information using a strategy that can be summarized as distill-then-synthesize. In the disti...
Giant photon gain in large-scale quantum dot-circuit QED systems
B. Agarwalla, M. Kulkarni, S. Mukamel +1 more·Jun 3, 2016
Author(s): Agarwalla, BK; Kulkarni, M; Mukamel, S; Segal, D | Abstract: © 2016 American Physical Society. Motivated by recent experiments on the generation of coherent light in engineered hybrid quantum systems, we investigate gain in a microwave pho...
Non-Markovianity and memory of the initial state
M. Hinarejos, M. Bañuls, Armando P'erez +1 more·Jun 3, 2016
We explore in a rigorous manner the intuitive connection between the non-Markovianity of the evolution of an open quantum system and the performance of the system as a quantum memory. Using the paradigmatic case of a two-level open quantum system cou...
Concurrent Remote Entanglement with Quantum Error Correction
A. Roy, A. Stone, Liang Jiang·Jun 3, 2016
Remote entanglement of distant, noninteracting quantum entities is a key primitive for quantum information processing. We present a protocol to remotely entangle two stationary qubits by first entangling them with propagating ancilla qubits and then ...
Measurement of linear response functions in Nuclear Magnetic Resonance
T. Xin, J. S. Pedernales, L. Lamata +2 more·Jun 2, 2016
We measure multi-time correlation functions of a set of Pauli operators on a two-level system, which can be used to retrieve its associated linear response functions. The two-level system is an effective spin constructed from the nuclear spins of 1H ...
Improving trapped-ion-qubit memories via code-mediated error-channel balancing
Yannick Seis, Benjamin J. Brown, A. Sørensen +1 more·May 31, 2016
The high-fidelity storage of quantum information is crucial for quantum computation and communication. Many experimental platforms for these applications exhibit highly biased noise, with good resilience to spin depolarisation undermined by high deph...
Universal Quantum Computing with Arbitrary Continuous-Variable Encoding.
Hoi-Kwan Lau, M. Plenio·May 30, 2016
Implementing a qubit quantum computer in continuous-variable systems conventionally requires the engineering of specific interactions according to the encoding basis states. In this work, we present a unified formalism to conduct universal quantum co...
Experimental Ten-Photon Entanglement.
Xi-Lin Wang, Luo-Kan Chen, Wei Li +16 more·May 27, 2016
We report the first experimental demonstration of quantum entanglement among ten spatially separated single photons. A near-optimal entangled photon-pair source was developed with simultaneously a source brightness of ∼12 MHz/W, a collection efficie...
Quantum Teleportation Between Discrete and Continuous Encodings of an Optical Qubit.
Alexander Ulanov, D. Sychev, A. A. Pushkina +2 more·May 27, 2016
The transfer of quantum information between physical systems of a different nature is a central matter in quantum technologies. Particularly challenging is the transfer between discrete and continuous degrees of freedom of various harmonic oscillator...
Robust entanglement distribution via quantum network coding
M. Epping, H. Kampermann, D. Bruß·May 26, 2016
Many protocols of quantum information processing, like quantum key distribution or measurement-based quantum computation, ‘consume’ entangled quantum states during their execution. When participants are located at distant sites, these resource states...
Clean Quantum and Classical Communication Protocols.
H. Buhrman, Matthias Christandl, Christopher Perry +1 more·May 25, 2016
By how much must the communication complexity of a function increase if we demand that the parties not only correctly compute the function but also return all registers (other than the one containing the answer) to their initial states at the end of ...
Continuous Quantum Nondemolition Measurement of the Transverse Component of a Qubit.
U. Vool, S. Shankar, S. Mundhada +9 more·May 25, 2016
Quantum jumps of a qubit are usually observed between its energy eigenstates, also known as its longitudinal pseudospin component. Is it possible, instead, to observe quantum jumps between the transverse superpositions of these eigenstates? We answer...
Theory of single and two-qubit operations with donor-bound electron spins in germanium
G. Pica, B. Lovett·May 25, 2016
The possibility of quantum computing with spins in germanium nanoscale transistors has recently attracted interest since it promises highly tuneable qubits that have encouraging coherence times. We here present the first complete theory of the orbita...
Optimizing Teleportation Cost in Distributed Quantum Circuits
Mariam Zomorodi-Moghadam, M. Houshmand, M. Houshmand·May 25, 2016
The presented work provides a procedure for optimizing the communication cost of a distributed quantum circuit (DQC) in terms of the number of qubit teleportations. Because of technology limitations which do not allow large quantum computers to work ...