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quant-ph2016★ 38 cited

Polarizing the electronic and nuclear spin of the NV-center in diamond in arbitrary magnetic fields: analysis of the optical pumping process

Tanmoy Chakraborty, Jingfu Zhang, Dieter Suter

Initializing a set of qubits to a given quantum state is a basic prerequisite for the physical implementation of quantum-information protocols. Here, we discuss the polarization of…

quant-ph2016★ 20 cited

Nonlinear Dynamics of a two-level system of a single spin driven beyond the rotating-wave approximation

K. Rama Koteswara Rao, Dieter Suter

Quantum systems driven by strong oscillating fields are the source of many interesting physical phenomena. In this work, we experimentally study the dynamics of a two-level system…

quant-ph2016★ 11 cited

Defect production in nonequilibrium phase transitions: Experimental investigation of the Kibble-Zurek mechanism in a two-qubit quantum simulator

Jingfu Zhang, Fernando M. Cucchietti, Raymond Laflamme +1

Systems passing through quantum critical points at finite rates have a finite probability of undergoing transitions between different eigenstates of the instantaneous Hamiltonian.…

quant-ph2016★ 35 cited

Characterization of hyperfine interaction between an NV electron spin and a first-shell 13C nuclear spin in diamond

K. Rama Koteswara Rao, Dieter Suter

The Nitrogen-Vacancy (NV) center in diamond has attractive properties for a number of quantum technologies that rely on the spin angular momentum of the electron and the nuclei adj…

quant-ph2016

Pauli Decomposition over Commuting Subsets: Applications in Gate Synthesis, State Preparation, and Quantum Simulations

Swathi S. Hegde, K. R. Koteswara Rao, T. S. Mahesh

A key task in quantum computation is the application of a sequence of gates implementing a specific unitary operation. However, the decomposition of an arbitrary unitary operation…

quant-ph2016★ 20 cited

Persisting correlations of a central spin coupled to large spin baths

Urban Seifert, Philip Bleicker, Philipp Schering +2

The decohering environment of a quantum bit is often described by the coupling to a large bath of spins. The quantum bit itself can be seen as a spin which is commonly call…