Quantum Acoustics and Acoustic Traps and Lattices for Electrons in Semiconductors

71 Pages·2017·7.26 MB·English

by  Géza Giedke

Quantum Acoustics and Acoustic Traps and Lattices
for Electrons in Semiconductors
Géza Giedke
IkerbasqueFoundationandDonostiaInternationalPhysicsCenter
September14,2017
AdvancedSchoolandWorkshopon
QuantumScienceandQuantumTechnologies
ICTP Trieste
AcousticLattices 1/41
Collaborators on this work
J Knörzer I Cirac
Harvard U M Schütz M Lukin L Vandersypen
AcousticLattices 2/41
Surface Acoustic Waves for QIP
bosonic fields/modes play crucial role in almost all QIP
implementations (trapped ions, all photonic/quantum optical
approaches, circuit-QED, ...)
QIP in semiconductor nanostructures: still no “canonical” choice
recent success using surface acoustic phonons for
electrontransport(CFord(Oxford),TMeunier(Grenoble): phys
statsol(b)254(2017): Ford,arXiv:1702.06628[3]andHermelinet
al. [8])
trappingexciton-polaritonswithSAWs: PSantos(PDIBerlin): de
Lima&Santos,RepProgPhys68(2005).
SAW-basedquantumcomputing: Barnesetal.,PRB62(2000)[1].
related: SAW-resonatorsandsuperconductingqubits: PDelsing
(Chalmers): Gustafsson,Science346(2014)[7].
aim of this talk: SAWs modes as quantum bus and SA standing
waves for acoustic lattices for electrons
AcousticLattices 3/41
Surface Acoustic Waves for QIP
bosonic fields/modes play crucial role in almost all QIP
implementations (trapped ions, all photonic/quantum optical
approaches, circuit-QED, ...)
QIP in semiconductor nanostructures: still no “canonical” choice
recent success using surface acoustic phonons for
electrontransport(CFord(Oxford),TMeunier(Grenoble): phys
statsol(b)254(2017): Ford,arXiv:1702.06628[3]andHermelinet
al. [8])
trappingexciton-polaritonswithSAWs: PSantos(PDIBerlin): de
Lima&Santos,RepProgPhys68(2005).
SAW-basedquantumcomputing: Barnesetal.,PRB62(2000)[1].
related: SAW-resonatorsandsuperconductingqubits: PDelsing
(Chalmers): Gustafsson,Science346(2014)[7].
aim of this talk: SAWs modes as quantum bus and SA standing
waves for acoustic lattices for electrons
AcousticLattices 3/41
Surface Acoustic Waves for QIP
bosonic fields/modes play crucial role in almost all QIP
implementations (trapped ions, all photonic/quantum optical
approaches, circuit-QED, ...)
QIP in semiconductor nanostructures: still no “canonical” choice
recent success using surface acoustic phonons for
electrontransport(CFord(Oxford),TMeunier(Grenoble): phys
statsol(b)254(2017): Ford,arXiv:1702.06628[3]andHermelinet
al. [8])
trappingexciton-polaritonswithSAWs: PSantos(PDIBerlin): de
Lima&Santos,RepProgPhys68(2005).
SAW-basedquantumcomputing: Barnesetal.,PRB62(2000)[1].
related: SAW-resonatorsandsuperconductingqubits: PDelsing
(Chalmers): Gustafsson,Science346(2014)[7].
aim of this talk: SAWs modes as quantum bus and SA standing
waves for acoustic lattices for electrons
AcousticLattices 3/41
Reminder: Quantum-dot Spin-qubits (cf. talk D Loss)
SlidecourtesyLVandersypen AcousticLattices 4/41
Reminder: Quantum-dot Spin-qubits (cf. talk D Loss)
proposed by Loss & DiVincenzo, PRA57(1998);cond-mat/9701055
[12]
qubit: spin of electron in QD
(cid:88) very compact, fast gates
(104 106 operations within T (GaAs vs Si))
2,DD
−
(cid:88) few-qubit demonstrations
? long-range coupling?
? architecture beyond 1d arrays?
(cid:70) can SAWs help?
AcousticLattices 5/41
Reminder: Quantum-dot Spin-qubits (cf. talk D Loss)
proposed by Loss & DiVincenzo, PRA57(1998);cond-mat/9701055
[12]
qubit: spin of electron in QD
(cid:88) very compact, fast gates
(104 106 operations within T (GaAs vs Si))
2,DD
−
(cid:88) few-qubit demonstrations
? long-range coupling?
? architecture beyond 1d arrays?
(cid:70) can SAWs help?
AcousticLattices 5/41
Reminder: Quantum-dot Spin-qubits (cf. talk D Loss)
proposed by Loss & DiVincenzo, PRA57(1998);cond-mat/9701055
[12]
qubit: spin of electron in QD
(cid:88) very compact, fast gates
(104 106 operations within T (GaAs vs Si))
2,DD
−
(cid:88) few-qubit demonstrations
? long-range coupling?
? architecture beyond 1d arrays?
(cid:70) can SAWs help?
AcousticLattices 5/41
Outline
1 what are surface acoustic waves...
2 ... and what may they be useful for?
3 “cavity-QED” with SAWs
4 acoustic lattices for electrons
5 summary and outlook
AcousticLattices 6/41