Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Observation of topological Uhlmann phases with superconducting qubits
O. Viyuela, O. Viyuela, O. Viyuela +5 more·Jul 29, 2016
Topological insulators and superconductors at finite temperature can be characterized by the topological Uhlmann phase. However, a direct experimental measurement of this invariant has remained elusive in condensed matter systems. Here, we report a m...
Multiple-output microwave single-photon source using superconducting circuits with longitudinal and transverse couplings
X. Wang, A. Miranowicz, Hong-rong Li +1 more·Jul 29, 2016
Single-photon devices at microwave frequencies are important for applications in quantum information processing and communication in the microwave regime. In this work we describe a proposal of a multioutput single-photon device. We consider two supe...
Coherence Preservation of a Single Neutral Atom Qubit Transferred between Magic-Intensity Optical Traps.
Jiaheng Yang, Xiaodong He, R. Guo +7 more·Jun 17, 2016
We demonstrate that the coherence of a single mobile atomic qubit can be well preserved during a transfer process among different optical dipole traps (ODTs). This is a prerequisite step in realizing a large-scale neutral atom quantum information pro...
Measuring a transmon qubit in circuit QED: Dressed squeezed states
M. Khezri, E. Mlinar, J. Dressel +1 more·Jun 14, 2016
Measuring a transmon qubit in circuit QED: dressed squeezed states Mostafa Khezri, 1, 2, ∗ Eric Mlinar, 1 Justin Dressel, 3, 4 and Alexander N. Korotkov 1 arXiv:1606.04204v2 [quant-ph] 1 Aug 2016 Department of Electrical and Computer Engineering, Uni...
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...
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...
Capacities of Quantum Amplifier Channels
H. Qi, M. Wilde·May 16, 2016
Quantum amplifier channels are at the core of several physical processes. Not only do they model the optical process of spontaneous parametric down-conversion, but the transformation corresponding to an amplifier channel also describes the physics of...
Optimal diabatic dynamics of Majorana-based quantum gates
Armin Rahmani, B. Seradjeh, M. Franz·May 11, 2016
In topological quantum computing, unitary operations on qubits are performed by adiabatic braiding of non-Abelian quasiparticles, such as Majorana zero modes, and are protected from local environmental perturbations. In the adiabatic regime, with tim...
Quantum computing with acceptor spins in silicon
J. Salfi, Mengyang Tong, S. Rogge +1 more·May 11, 2016
The states of a boron acceptor near a Si/SiO2 interface, which bind two low-energy Kramers pairs, have exceptional properties for encoding quantum information and, with the aid of strain, both heavy hole and light hole-based spin qubits can be design...
Gate-Sensing Coherent Charge Oscillations in a Silicon Field-Effect Transistor.
M. Gonzalez-Zalba, S. Shevchenko, S. Barraud +5 more·Feb 16, 2016
Quantum mechanical effects induced by the miniaturization of complementary metal-oxide-semiconductor (CMOS) technology hamper the performance and scalability prospects of field-effect transistors. However, those quantum effects, such as tunneling and...
Intrinsic errors in transporting a single-spin qubit through a double quantum dot
Xiao Li, Edwin Barnes, J. Kestner +1 more·Feb 9, 2016
Coherent spatial transport or shuttling of a single electron spin through semiconductor nanostructures is an important ingredient in many spintronic and quantum computing applications. In this work we analyze the possible errors in solid-state quantu...