TY - JOUR
AU1 - Kent, Adrian
AB - Alice gives Bob an unknown localized physical state at some point P. At some point Q in the causal future of P, Alice will ask Bob for the state back. Bob knows this, but does not know at which point Q until the request is made. Bob can satisfy Alice’s summons, with arbitrarily short delay, for a quantum state in Galilean space-time or a classical state in Minkowski space-time. However, given an unknown quantum state in Minkowski space-time, he cannot generally fulfil her summons. This no-summoning theorem is a fundamental feature of, and intrinsic to, relativistic quantum theory. It follows from the no-signalling principle and the no-cloning theorem, but not from either alone.
TI - A no-summoning theorem in relativistic quantum theory
JF - Quantum Information Processing
DO - 10.1007/s11128-012-0431-6
DA - 2012-07-14
UR - https://www.deepdyve.com/lp/springer-journals/a-no-summoning-theorem-in-relativistic-quantum-theory-mPqhCgsBGx
SP - 1023
EP - 1032
VL - 12
IS - 2
DP - DeepDyve
ER -