Guido Burkard, Roger H. Koch, et al.
Physical Review B - CMMP
Security trade-offs have previously been established for one-way bit commitment. We study this trade-off in two superselection settings. We show that for an 'abelian' superselection rule (exemplified by particle conservation), the standard trade-off between sealing and binding properties still holds. For the non-abelian case (exemplified by angular momentum conservation), the security trade-off can be more subtle, which we illustrate by showing that if the bit commitment is forced to be ancilla-free, an asymptotically secure quantum bit commitment is possible.
Guido Burkard, Roger H. Koch, et al.
Physical Review B - CMMP
Charles H. Bennett, David P. DiVincenzo, et al.
Physical Review A - AMO
Barbara M. Terhal, Isaac L. Chuang, et al.
Physical Review A - AMO
Barbara M. Terhal, David P. DiVincenzo
Physical Review A - AMO