13 citations · 18 across the 3 of their papers we have counts for
3 papers
quant-ph2005★ 5 cited
Macroscopic entanglement in Quantum Computation
Akihisa Ukena, Akira Shimizu
We investigate macroscopic entanglement of quantum states in quantum computers, where we say a quantum state is entangled macroscopically if the state has superposition of macrosco…
quant-ph2003★ 13 cited
Appearance and Stability of Anomalously Fluctuating States in Shor's Factoring Algorithm
Akihisa Ukena, Akira Shimizu
We analyze quantum computers which perform Shor's factoring algorithm, paying attention to asymptotic properties as the number L of qubits is increased. Using numerical simulations…
quant-ph2001
Decoherence of anomalously-fluctuating states of finite macroscopic systems
Akira Shimizu, Takayuki Miyadera, Akihisa Ukena
In quantum systems of a macroscopic size V, such as interacting many particles and quantum computers with many qubits, there exist pure states such that fluctuations of some intens…