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quant-ph2009
QIP = PSPACE
Rahul Jain, Zhengfeng Ji, Sarvagya Upadhyay +1
We prove that the complexity class QIP, which consists of all problems having quantum interactive proof systems, is contained in PSPACE. This containment is proved by applying a pa…
quant-ph2009
On the power of a unique quantum witness
Rahul Jain, Iordanis Kerenidis, Greg Kuperberg +3
In a celebrated paper, Valiant and Vazirani raised the question of whether the difficulty of NP-complete problems was due to the wide variation of the number of witnesses of their…