Papers

N. Vitanov, A. Rangelov, B. Shore +1 more·May 1, 2016

The technique of stimulated Raman adiabatic passage (STIRAP), which allows efficient and selective population transfer between quantum states without suffering loss due to spontaneous emission, was introduced in 1990 (Gaubatz \emph{et al.}, J. Chem. ...

Henry Semenenko, T. Byrnes·Apr 29, 2016

Quantum computing implementations under consideration today typically deal with systems with microscopic degrees of freedom such as photons, ions, cold atoms, and superconducting circuits. The quantum information is stored typically in low-dimensiona...

D. Ward, Dohun Kim, D. Savage +5 more·Apr 27, 2016

Universal quantum computation requires high-fidelity single-qubit rotations and controlled two-qubit gates. Along with high-fidelity single-qubit gates, strong efforts have been made in developing robust two-qubit logic gates in electrically gated qu...

L. Sansoni, K. Luo, C. Eigner +4 more·Apr 12, 2016

Integrated optics provides the platform for the experimental implementation of highly complex and compact circuits for quantum information applications. In this context integrated waveguide sources represent a powerful resource for the generation of ...

D. Maslov·Mar 24, 2016

We study the problem of compilation of quantum algorithms into optimized physical-level circuits executable in a quantum information processing (QIP) experiment based on trapped atomic ions. We report a complete strategy: starting with an algorithm i...

S. Brandsen, M. Dall’Arno, Anna Szymusiak·Mar 21, 2016

We operationally introduce mixed quantum t-designs as the most general arbitrary-rank extension of projective quantum t-designs which preserves indistinguishability from the uniform distribution for t copies. First, we derive upper bounds on the clas...

Chuiping Yang, Qi-Ping Su, Shi-Biao Zheng +1 more·Mar 19, 2016

In a circuit consisting of two or more resonators, the inter-cavity crosstalk is inevitable, which could create some problems, such as degrading the performance of quantum operations and the fidelity of various quantum states. The focus of this work ...

I. Petersen·Mar 16, 2016

This paper surveys some recent results on the theory of quantum linear systems and presents them within a unified framework. Quantum linear systems are a class of systems whose dynamics, which are described by the laws of quantum mechanics, take the ...

Alan C. Santos·Mar 16, 2016

Adiabatic evolution is a powerful technique in quantum information and computation. However, its performance is limited by the adiabatic theorem of quantum mechanics. In this scenario, shortcuts to adiabaticity, such as provided by the superadiabatic...

A. Narla, Shyam Shankar, M. Hatridge +8 more·Mar 11, 2016

Entangling two remote quantum systems which never interact directly is an essential primitive in quantum information science and forms the basis for the modular architecture of quantum computing. When protocols to generate these remote entangled pair...

Xiang Guo, Chang-ling Zou, C. Schuck +3 more·Mar 11, 2016

Quantum-photonic chips, which integrate quantum light sources alongside active and passive optical elements, as well as single-photon detectors, show great potential for photonic quantum information processing and quantum technology. Mature semicondu...

Gengyan Zhang, Yanbing Liu, J. Raftery +1 more·Mar 3, 2016

We demonstrate the suppression of photon shot noise dephasing in a superconducting qubit by eliminating its dispersive coupling to the readout cavity. This is achieved in a tunable coupling qubit, where the qubit frequency and coupling rate can be co...

R. Patel, Joseph Ho, F. Ferreyrol +2 more·Mar 1, 2016

A quantum controlled-SWAP gate is demonstrated and used to implement small-scale algorithms and produce high-fidelity GHZ states. Minimizing the resources required to build logic gates into useful processing circuits is key to realizing quantum compu...

Hao Zhang, Haibo Wang·Feb 29, 2016

In recent years, superconducting qubits show great potential in quantum computation. Hence, microwave photons become very interesting qubits for quantum information processing assisted by superconducting quantum computation. Here, we present the firs...

R. Chapman, M. Santandrea, Zixin Huang +5 more·Feb 29, 2016

The transfer of data is a fundamental task in information systems. Microprocessors contain dedicated data buses that transmit bits across different locations and implement sophisticated routing protocols. Transferring quantum information with high fi...

K. Fujii, K. Nakajima·Feb 26, 2016

Quantum computer has an amazing potential of fast information processing. However, realisation of a digital quantum computer is still a challenging problem requiring highly accurate controls and key application strategies. Here we propose a novel pla...

Qi-Ping Su, Tongqi Liu, Chuiping Yang·Feb 24, 2016

The transfer of quantum entanglement (or quantum coherence) is not only fundamental in quantum mechanics but also important in quantum information processing. We here propose a way to achieve the coherent transfer of W-class entangled states of qubit...

J. Casanova, Zhen-Yu Wang, M. Plenio·Feb 22, 2016

Selective control of qubits in a quantum register for the purposes of quantum information processing represents a critical challenge for dense spin ensembles in solid-state systems. Here we present a protocol that achieves a complete set of selective...

S. Schwarz, A. Stefanov, S. Wolf +1 more·Feb 17, 2016

A problem in quantum information theory is to find the experimental setup that maximizes the nonlocality of correlations with respect to some suitable measure such as the violation of Bell inequalities. The latter has however some drawbacks. First an...

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...