Research output: Contribution to journal › Article › peer-review
Position Measurements Obeying Momentum Conservation. / Busch, P; Loveridge, Leon.
In: Physical Review Letters, Vol. 106, No. 11, 110406, 18.03.2011, p. 1-4.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Position Measurements Obeying Momentum Conservation
AU - Busch, P
AU - Loveridge, Leon
PY - 2011/3/18
Y1 - 2011/3/18
N2 - We present a hitherto unknown fundamental limitation to a basic measurement: that of the position of a quantum object when the total momentum of the object and apparatus is conserved. This result extends the famous Wigner-Araki-Yanase theorem, and shows that accurate position measurements are only practically feasible if there is a large momentum uncertainty in the apparatus.
AB - We present a hitherto unknown fundamental limitation to a basic measurement: that of the position of a quantum object when the total momentum of the object and apparatus is conserved. This result extends the famous Wigner-Araki-Yanase theorem, and shows that accurate position measurements are only practically feasible if there is a large momentum uncertainty in the apparatus.
KW - Mathematical Physics
UR - http://www.scopus.com/inward/record.url?scp=79952819884&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.106.110406
DO - 10.1103/PhysRevLett.106.110406
M3 - Article
VL - 106
SP - 1
EP - 4
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 110406
ER -