Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=28638097
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
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
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
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 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 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\28638097
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2017 ; 7
(1
): 3998
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Linking the rotation of a rigid body to the Schrödinger equation: The quantum
tennis racket effect and beyond
#MMPMID28638097
Damme LV
; Leiner D
; Marde?i? P
; Glaser SJ
; Sugny D
Sci Rep
2017[Jun]; 7
(1
): 3998
PMID28638097
show ga
The design of efficient and robust pulse sequences is a fundamental requirement
in quantum control. Numerical methods can be used for this purpose, but with
relatively little insight into the control mechanism. Here, we show that the free
rotation of a classical rigid body plays a fundamental role in the control of
two-level quantum systems by means of external electromagnetic pulses. For a
state to state transfer, we derive a family of control fields depending upon two
free parameters, which allow us to adjust the efficiency, the time and the
robustness of the control process. As an illustrative example, we consider the
quantum analog of the tennis racket effect, which is a geometric property of any
classical rigid body. This effect is demonstrated experimentally for the control
of a spin 1/2 particle by using techniques of Nuclear Magnetic Resonance. We also
show that the dynamics of a rigid body can be used to implement one-qubit quantum
gates. In particular, non-adiabatic geometric quantum phase gates can be realized
based on the Montgomery phase of a rigid body. The robustness issue of the gates
is discussed.