BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261026T000939Z
LAST-MODIFIED:20201027T194031Z
DTSTART:20201028T200000Z
DTEND:20201028T210000Z
UID:event2368@bu.edu
URL:http://physics.bu.edu/internal/events/show/2368
SUMMARY:Simplifying multi-level thermal machines using virtual qubits
DESCRIPTION:Featuring Ayaka Usui\, OIST\n\nPart of the Biophysics/Condensed
	 Matter Seminar Series.\n\nInvestigating the control of thermal machines in
	 the quantum regime allows one to explore the fundamental limits of thermod
	ynamic tasks. To study such processes\, it is usual to consider a few quant
	um-mechanical degrees of freedom interacting with a large environment\, whi
	ch one does not have detailed control over. Higher-dimensional machines are
	 harder to simulate exactly\, and hence much of the focus is on models that
	 are simple enough to be treatable by master equations\, such as a few qubi
	ts. Expanding the target system to multi-level systems beyond qubits is a c
	hallenge. In this work [1]\, we address this problem for three-level system
	s\, as well as arbitrary-level systems\, coherently interacting with severa
	l virtual qubits in the context of reset master equations. We investigate t
	he steady-state solution for three-level systems coupled to virtual qubits 
	and identify properties of multi-level thermal machines. In this talk\, I w
	ill start with the introduction of the history of thermodynamic tasks in th
	e quantum regime and virtual qubits before presenting the findings of this 
	work. I will then propose a method to enhance the performance of the paradi
	gmatic three-level maser/laser to show the advantages of the results obtain
	ed from this work. \n\n[1] A. Usui\, W. Niedenzu\, and M. Huber\, Simplifyi
	ng multi-level thermal machines using virtual qubits\, arXiv:2009.03832.\n\
	nzoom link: \n[https://bostonu.zoom.us/j/97975652026?pwd=cnhiQ1V1d29CZ1JpSV
	JWWHQ5WEZaUT09]\n\n[https://bostonu.zoom.us/j/97975652026?pwd=cnhiQ1V1d29CZ
	1JpSVJWWHQ5WEZaUT09]:https://bostonu.zoom.us/j/97975652026?pwd=cnhiQ1V1d29C
	Z1JpSVJWWHQ5WEZaUT09
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR