96 citations · 271 across the 20 of their papers we have counts for
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Quantum key distribution using superposition of the vacuum and single photon states
Jae-Weon Lee, Jaewan Kim, Yong Wook Cheong +2
B92-type and BB84-type quantum cryptography schemes using superposed states of the vacuum and single particle states which are robust against PNS attacks are studied. The number of…
Quantum Cryptography Using Single Particle Entanglement
Jae-Weon Lee, Eok Kyun Lee, Yong Wook Chung +2
A quantum cryptography scheme based on entanglement between a single particle state and a vacuum state is proposed. The scheme utilizes linear optics devices to detect the superpos…
Nonlocality of Hardy type in experiments using independent particle sources
Xu-Bo Zou, Hai-Woong Lee, Jaewan Kim +2
By applying Hardy's argument, we demonstrate the violation of local realism in a gedanken experiment using independent and separated particle sources.
Qubit geometry and conformal mapping
Jae-weon Lee, Chang Ho Kim, Eok Kyun Lee +2
Identifying the Bolch sphere with the Riemann sphere(the extended complex plane), we obtain relations between single qubit unitary operations and Möbius transformations on the exte…
Quantum Shift Register
Jae-weon Lee, Eok Kyun Lee, Jaewan Kim +1
We consider a quantum circuit in which shift and rotation operations on qubits are performed by swap gates and controlled swap gates. These operations can be useful for quantum com…