Parametrization and Optimization of Gaussian Non-Markovian Unravelings for Open Quantum Dynamics

Physical Review Letters
Nina MegierKimmo Luoma

Abstract

We derive a family of Gaussian non-Markovian stochastic Schrödinger equations for the dynamics of open quantum systems. The different unravelings correspond to different choices of squeezed coherent states, reflecting different measurement schemes on the environment. Consequently, we are able to give a single shot measurement interpretation for the stochastic states and microscopic expressions for the noise correlations of the Gaussian process. By construction, the reduced dynamics of the open system does not depend on the squeezing parameters. They determine the non-Hermitian Gaussian correlation, a wide range of which are compatible with the Markov limit. We demonstrate the versatility of our results for quantum information tasks in the non-Markovian regime. In particular, by optimizing the squeezing parameters, we can tailor unravelings for improving entanglement bounds or for environment-assisted entanglement protection.

References

Feb 3, 1992·Physical Review Letters·J DalibardK Molmer
Feb 21, 2006·Physical Review Letters·Florian MintertAndreas Buchleitner
Oct 10, 2006·Physical Review Letters·Leandro Aolita, Florian Mintert
Mar 21, 2008·Physical Review Letters·Lajos Diósi
Mar 21, 2008·Physical Review Letters·L AolitaL Davidovich
Apr 11, 2008·Nature·Noam ErezGershon Kurizki
Jun 4, 2008·Physical Review Letters·Jyrki PiiloKalle-Antti Suominen
Oct 15, 2008·Physical Review Letters·Howard M Wiseman, J M Gambetta
Oct 2, 2009·Physical Review Letters·Angelo Bassi, Luca Ferialdi
Jan 15, 2011·Physical Review Letters·Gilad Gour
Jan 15, 2011·Physical Review Letters·Carlos ViviescasAndreas Buchleitner
Oct 27, 2011·Physical Review Letters·R SchmidtJ T Stockburger
Jun 12, 2012·Physical Review Letters·Susana F HuelgaMartin B Plenio
Sep 26, 2012·Physical Review Letters·Howard M Wiseman, Jay M Gambetta
Feb 2, 2013·Physical Review Letters·Alex W ChinMartin B Plenio
Aug 1, 2014·Nature·S J WeberI Siddiqi
Nov 29, 2014·Physical Review Letters·L Diósi, L Ferialdi
Mar 27, 2015·Reports on Progress in Physics·Leandro AolitaLuiz Davidovich
Jul 29, 2015·Nature Communications·S GröblacherJ Eisert
Jul 12, 2011·Journal of Chemical Theory and Computation·Christoph KreisbeckBirgit Hein
Apr 9, 2016·Physical Review Letters·L Ferialdi

❮ Previous
Next ❯

Citations

May 30, 2020·Physical Review Letters·Andrea SmirneJyrki Piilo
Aug 7, 2021·Entropy·Nina MegierBassano Vacchini

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Review A: General Physics
Y Ben-Aryeh, B Huttner
Physical Review. a
H C Baker, R L Singleton
Physical Review Letters
Dara P S McCutcheonAugusto J Roncaglia
© 2022 Meta ULC. All rights reserved