Ultracold Polar Molecules: New Phases of Matter for Quantum Information and Quantum Control

2011 ◽  
Author(s):  
Guido Pupillo ◽  
Peter Zoller
Keyword(s):  
Quantum Information ◽  
Quantum Control ◽  
Polar Molecules ◽  
Ultracold Polar Molecules

scholarly journals Universal relations for ultracold reactive molecules

2020 ◽  
Vol 6 (51) ◽  
pp. eabd4699
Author(s):  
Mingyuan He ◽  
Chenwei Lv ◽  
Hai-Qing Lin ◽  
Qi Zhou
Keyword(s):  
Critical Role ◽  
Interaction Strength ◽  
Quantum Correlations ◽  
Polar Molecules ◽  
Many Body ◽  
Density Correlation ◽  
Ultracold Polar Molecules ◽  
Unexplored Area ◽  
Many Body Systems

The realization of ultracold polar molecules in laboratories has pushed physics and chemistry to new realms. In particular, these polar molecules offer scientists unprecedented opportunities to explore chemical reactions in the ultracold regime where quantum effects become profound. However, a key question about how two-body losses depend on quantum correlations in interacting many-body systems remains open so far. Here, we present a number of universal relations that directly connect two-body losses to other physical observables, including the momentum distribution and density correlation functions. These relations, which are valid for arbitrary microscopic parameters, such as the particle number, the temperature, and the interaction strength, unfold the critical role of contacts, a fundamental quantity of dilute quantum systems, in determining the reaction rate of quantum reactive molecules in a many-body environment. Our work opens the door to an unexplored area intertwining quantum chemistry; atomic, molecular, and optical physics; and condensed matter physics.

Phase control for entanglement preparation in two-qubit systems

2005 ◽  
Vol 5 (4&5) ◽  
pp. 364-379
Author(s):  
V.S. Malinovsky ◽  
I.R. Sola
Keyword(s):  
Quantum Information ◽  
Quantum Computation ◽  
Quantum Control ◽  
Phase Control ◽  
Adiabatic Passage ◽  
Pulse Parameters ◽  
Qubit System ◽  
Phase Manipulation ◽  
Laser Control ◽  
Pi Pulses

The theory of Quantum Control is starting to lay bridges with the field of Quantum Information and Quantum Computation. Using key ideas of laser control of the dynamics by means of phase manipulation and adiabatic passage, we review laser schemes that allow entanglement preparation in a two-qubit system. The schemes are based on sequences that use four time-delayed pulses, with or without concerted decay, in or off resonance with the intermediate levels of the qubit space. We show how to control the fidelity and phase of the entanglement, as well as the sensitivity of the preparation to the different pulse parameters. In general the schemes provide an improvement in robustness and in the finesse of the control to phase, with respect to previously proposed schemes based on sequences of $\pi$ pulses.

scholarly journals Quantum many-body physics with ultracold polar molecules: Nanostructured potential barriers and interactions

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
Andreas Kruckenhauser ◽  
Lukas M. Sieberer ◽  
Luigi De Marco ◽  
Jun-Ru Li ◽  
Kyle Matsuda ◽  
...  
Keyword(s):  
Polar Molecules ◽  
Many Body ◽  
Potential Barriers ◽  
Ultracold Polar Molecules ◽  
Many Body Physics

scholarly journals Manufacturing a thin wire electrostatic trap for ultracold polar molecules

2007 ◽  
Vol 78 (11) ◽  
pp. 113108 ◽  
Author(s):  
J. Kleinert ◽  
C. Haimberger ◽  
P. J. Zabawa ◽  
N. P. Bigelow
Keyword(s):  
Polar Molecules ◽  
Thin Wire ◽  
Ultracold Polar Molecules ◽  
Electrostatic Trap

scholarly journals Nonadiabatic Preparation of Spin Crystals with Ultracold Polar Molecules

2012 ◽  
Vol 109 (3) ◽  
Author(s):  
Mikhail Lemeshko ◽  
Roman V. Krems ◽  
Hendrik Weimer
Keyword(s):  
Polar Molecules ◽  
Ultracold Polar Molecules

scholarly journals Singlet Pathway to the Ground State of Ultracold Polar Molecules

2020 ◽  
Vol 124 (13) ◽  
Author(s):  
A. Yang ◽  
S. Botsi ◽  
S. Kumar ◽  
S. B. Pal ◽  
M. M. Lam ◽  
...  
Keyword(s):  
Ground State ◽  
Polar Molecules ◽  
Ultracold Polar Molecules
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