2 citations · 2 across the 7 of their papers we have counts for
11 papers · 1 filter
Comment on quant-ph/0506105: The modified Grover algorithm cannot speedup unsorted database search
Gui Lu Long
In a recent paper (quant-ph/0506105), A S Gupta, M. Gupta and A. Pathak proposed a modified Grover algorithm that would exponentially accelerate the unsorted database search proble…
Coherence Control of Adiabatic Decoherence in a Three-level Atom with Lambda Configuration
Xiao-Shu Liu, Wu Re-bing, Yang Liu +2
In this paper, we study the suppression of adiabatic decoherence in a three-level atom with configuration using bang-bang control technique. We have given the decoupling bang-b…
Construction of Elementary Gates in Quantum Computation by Joint Measurement
Jia-Qi Jin, Gui-Lu Long
In this paper, elementary quantum gate operations, such as the phase gate, the controlled-NOT gate, the swap and the Fredkin gate are constructed using joint measurement and pairs…
Distinctness of ensembles having the same density matrix and the nature of liquid NMR quantum computing
Gui-Lu Long, Yi-Fan Zhou, Jia-Qi Jin +1
We show that differently constructed ensembles having the same density matrix may be physically distinguished by observing fluctuations of some observables. An explicit expression…
Quantum privacy amplification for quantum secure direct communication
Fu-Guo Deng, Gui Lu Long
Using quantum mechanics, secure direct communication between distant parties can be performed. Over a noisy quantum channel, quantum privacy amplification is a necessary step to en…
Multiple Round Quantum Dense Coding And Its Implementation Using Nuclear Magnetic Resonance
Jingfu Zhang, Jingyi Xie, Chuan Wang +3
A multiple round quantum dense coding (MRQDC) scheme based on the quantum phase estimation algorithm is proposed. Using an qubit system, Bob can transmit messages t…