Imoto, NobuyukiKoashi, Masato2004-12-032004-12-0320012001http://hdl.handle.net/2003/47310.17877/DE290R-10274enThe American Physical SocietyPhysical Review Letters530Compressibility of Quantum Mixed-State Signals10.1103/PhysRevLett.87.017902article (journal)