Now showing items 1-17 of 17

• #### Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers ﻿

(American Physical Society, 2009)
We propose and analyze a novel approach to quantum information processing, in which multiple qubits can be encoded and manipulated using electronic and nuclear degrees of freedom associated with individual alkaline-earth ...
• #### Anyonic Interferometry and Protected Memories in Atomic Spin Lattices ﻿

(Nature Publishing Group, 2008)
Strongly correlated quantum systems can exhibit exotic behavior called topological order which is characterized by non-local correlations that depend on the system topology. Such systems can exhibit remarkable phenomena ...
• #### Attractive photons in a quantum nonlinear medium ﻿

(Springer Nature, 2013)
The fundamental properties of light derive from its constituent particles—massless quanta (photons) that do not interact with one another$^1$. However, it has long been known that the realization of coherent interactions ...
• #### Coherent Quantum Optical Control with Subwavelength Resolution ﻿

(American Physical Society, 2008)
We suggest a new method for quantum optical control with nanoscale resolution. Our method allows for coherent far-field manipulation of individual quantum systems with spatial selectivity that is not limited by the wavelength ...
• #### Far-Field Optical Imaging and Manipulation of Individual Spins with Nanoscale Resolution ﻿

(Nature Publishing Group, 2010)
A fundamental limit to existing optical techniques for measurementand manipulation of spin degrees of freedom is set by diffraction, which does not allow spins separated by less than about a quarter of a micrometre to be ...
• #### Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection ﻿

(American Physical Society, 2010)
Quantum repeaters based on atomic ensemble quantum memories are promising candidates for achieving scalable distribution of entanglement over long distances. Recently, important experimental progress has been made toward ...
• #### Photon Storage in Lambda-type Optically Dense Atomic Media. IV. Optimal Control Using Gradient Ascent ﻿

(American Physical Society, 2008)
We use the numerical gradient ascent method from optimal control theory to extend efficient photon storage in Lambda-type media to previously inaccessible regimes and to provide simple intuitive explanations for our ...
• #### Photon-Photon Interactions via Rydberg Blockade ﻿

(American Physical Society, 2011)
We develop the theory of light propagation under the conditions of electromagnetically induced transparency in systems involving strongly interacting Rydberg states. Taking into account the quantum nature and the spatial ...
• #### Photonic Phase Gate via an Exchange of Fermionic Spin Waves in a Spin Chain ﻿

(American Physical Society, 2010)
We propose a new protocol for implementing the two-qubit photonic phase gate. In our approach, the pi phase is acquired by mapping two single photons into atomic excitations with fermionic character and exchanging their ...
• #### Quantum Magnetism with Polar Alkali-Metal Dimers ﻿

(American Physical Society, 2011)
We show that dipolar interactions between ultracold polar alkali dimers in optical lattices can be used to realize a highly tunable generalization of the $t-J$ model, which we refer to as the $t-J-V-W$ model. The model ...
• #### Quantum Nonlinear Optics with Single Photons Enabled by Strongly Interacting Atoms ﻿

(Nature Publishing Group, 2012)
The realization of strong nonlinear interactions between individual light quanta (photons) is a long-standing goal in optical science and engineering, being of both fundamental and technological significance. In conventional ...
• #### Realization of Coherent Optically Dense Media via Buffer-Gas Cooling ﻿

(American Physical Society, 2009)
We demonstrate that buffer-gas cooling combined with laser ablation can be used to create coherent optical media with high optical depth and low Doppler broadening that offers metastable states with low collisional and ...
• #### Robust Quantum State Transfer in Random Unpolarized Spin Chains ﻿

(American Physical Society, 2011)
We propose and analyze a new approach for quantum state transfer between remote spin qubits. Specifically, we demonstrate that coherent quantum coupling between remote qubits can be achieved via certain classes of random, ...
• #### Scalable Architecture for a Room Temperature Solid-State Quantum Information Processor ﻿

(Nature Publishing Group, 2012)
The realization of a scalable quantum information processor has emerged over the past decade as one of the central challenges at the interface of fundamental science and engineering. Here we propose and analyse an ...
• #### Scattering resonances and bound states for strongly interacting Rydberg polaritons ﻿

(American Physical Society (APS), 2014)
We provide a theoretical framework describing slow-light polaritons interacting via atomic Rydberg states. The method allows us to analytically derive the scattering properties of two polaritons. We identify parameter ...
• #### Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules ﻿

(American Physical Society, 2011)
By selecting two dressed rotational states of ultracold polar molecules in an optical lattice, we obtain a highly tunable generalization of the $t-J$ model, which we refer to as the $t-J-V-W$ model. In addition to XXZ ...
• #### Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms ﻿

(Nature Publishing Group, 2010)
Fermionic alkaline-earth atoms have unique properties that make them attractive candidates for the realization of atomic clocks and degenerate quantum gases. At the same time, they are attracting considerable theoretical ...