# Quantum ultracold atomtronics

@article{Olsen2015QuantumUA, title={Quantum ultracold atomtronics}, author={Murray K. Olsen and Ashton S. Bradley}, journal={Physical Review A}, year={2015}, volume={91}, pages={043635} }

It is known that a semiclassical analysis is not always adequate for atomtronics devices, but that a fully quantum analysis is often necessary to make reliable predictions. While small numbers of atoms at a small number of sites are tractable using the density matrix, a fully quantum analysis is often not straightforward as the system becomes larger. We show that the fully quantum positive-P representation is then a viable calculational tool. We postulate an atomtronic phase gate consisting of… Expand

#### 13 Citations

Quantum phase transition modulation in an atomtronic Mott switch.

- Physics
- 2018

Mott insulators provide stable quantum states and long coherence times to due to small number fluctuations, making them good candidates for quantum memory and atomic circuits. We propose a… Expand

Control of tunneling in an atomtronic switching device

- Physics
- 2017

The precise control of quantum systems will play a major role in the realization of atomtronic devices. As in the case of electronic systems, a desirable property is the ability to implement… Expand

Quantum phase transition modulation in an atomtronic Mott switch May 15 , 2018

- 2018

Mott insulators provide stable quantum states and long coherence times due to small number fluctuations, making them good candidates for quantum memory and atomic circuits. We propose a… Expand

Many-body quantum tunneling of ultracold bosonic gases : quantum phase transitions, bosonic Josephson junctions, and Mott switch atomtronics

- Physics
- 2019

Ultracold Bose gases as precise quantum simulators have emerged amongst the leaders in the current race – a second quantum revolution – toward the promise of unfathomable sensitivity, scope, and… Expand

Mesoscopic Dynamical Differences from Quantum State Preparation in a Bose-Hubbard Trimer.

- Physics, Medicine
- Physical review letters
- 2018

Differences in the preparation of a centrally evacuated trimer can lead to readily observable differences in the subsequent dynamics which increase with system size, and these differences can be detected by the simple measurements of atomic number. Expand

Quantum behaviour of open pumped and damped Bose-Hubbard trimers

- Physics
- 2018

We propose and analyse analogs of optical cavities for atoms using three-well inline Bose-Hubbard models with pumping and losses. With one well pumped and one damped, we find that both the mean-field… Expand

Quantum State of the Fermionic Carriers in a Transport Channel Connecting Particle Reservoirs

- Physics
- Condensed Matter
- 2019

We analyze the quantum state of fermionic carriers in a transport channel attached to a particle reservoir. The analysis is done from first principles by considering microscopic models of the… Expand

Control of tunneling in a triple-well system: an atomtronic switching device

- Physics
- 2017

We study a model of bosons confined to three coupled wells. The model describes interactions between bosons, tunneling of bosons between adjacent wells, and the effect of an external field. We… Expand

Tunneling vortex dynamics in linearly coupled Bose-Hubbard rings

- Physics
- 2019

The quantum dynamics of population-balanced fractional vortices and population-imbalanced vortices in an effective two-state bosonic system, made of two coupled discrete circuits with few sites, is… Expand

Challenges and constraints of dynamically emerged source and sink in atomtronic circuits: From closed-system to open-system approaches

- Physics, Computer Science
- Scientific reports
- 2016

This work considers dynamically emerged local potentials as controllable source and sink for bosonic atoms in cold-atom systems and investigates what types of system-environment coupling can help bring bosons into a dynamically emerged sink. Expand

#### References

SHOWING 1-10 OF 26 REFERENCES

Stochastic Methods: A Handbook for the Natural and Social Sciences

- Mathematics
- 2009

A Historical Introduction.- Probability Concepts.- Markov Processes.- The Ito Calculus and Stochastic Differential Equations.- The Fokker-Planck Equation.- The Fokker-Planck Equation in Several… Expand

Opt

- 2017

Many graphics and vision problems can be expressed as non-linear least squares optimizations of objective functions over visual data, such as images and meshes. The mathematical descriptions of these… Expand

B 47

- 095301
- 2014

Phys

- Lett. A 38, 1919
- 2014

Phys

- Rev. A 88, 043641
- 2013

Phys

- Rev. A 85, 053609
- 2012

[Et al].

- Medicine
- Archives de pediatrie : organe officiel de la Societe francaise de pediatrie
- 2012

Phys

- Rev. A 83, 043607
- 2011

Phys

- Rev. A 82, 013640
- 2010

Phys

- Rev. A 79, 012113
- 2009