Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28894092
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2017 ; 8
(1
): 501
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Coherent long-distance displacement of individual electron spins
#MMPMID28894092
Flentje H
; Mortemousque PA
; Thalineau R
; Ludwig A
; Wieck AD
; Bäuerle C
; Meunier T
Nat Commun
2017[Sep]; 8
(1
): 501
PMID28894092
show ga
Controlling nanocircuits at the single electron spin level is a possible route
for large-scale quantum information processing. In this context, individual
electron spins have been identified as versatile quantum information carriers to
interconnect different nodes of a spin-based semiconductor quantum circuit.
Despite extensive experimental efforts to control the electron displacement over
long distances, maintaining electron spin coherence after transfer remained
elusive up to now. Here we demonstrate that individual electron spins can be
displaced coherently over a distance of 5?µm. This displacement is realized on a
closed path made of three tunnel-coupled lateral quantum dots at a speed
approaching 100?ms(-1). We find that the spin coherence length is eight times
longer than expected from the electron spin coherence without displacement,
pointing at a process similar to motional narrowing observed in nuclear magnetic
resonance experiments. The demonstrated coherent displacement will open the route
towards long-range interaction between distant spin qubits.The spin states of
electrons in quantum dots have well-established potential for use as qubits but
some proposed developments require the ability to move the quantum spin state
across a larger device. Here, the authors experimentally demonstrate coherent
shuttling of spins in a ring of three dots.