Crypto and new computing strategies

Robert M. Solovay solovay at
Wed Mar 30 16:48:42 PST 1994

hughes at writes:

>> The Bekenstein Bound gives limits both on the expected maximum number
>> of quantum states encodable in a given volume of space and on the
>> expected maximum number os transitions between these states.  If this
>> bound holds (and it certainly seems to hold for EM fields), then a
>> probabilistic Turing machine will be able to simulate it.

	Can you give a reference for this Bekenstein bound?

  		Bob Solovay

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