You-Min Yi

Scheme for implementing quantum information sharing via tripartite entangled state in cavity QED

We investigate economic protocol to securely distribute and reconstruct a single-qubit quantum state between two users via a tripartite entangled state in cavity QED. Our scheme is insensitive to both the cavity decay and the thermal field.

QUANTUM STATE SHARING VIA THE GHZ STATE IN CAVITY QED WITHOUT JOINT MEASUREMENT

We investigate schemes to securely distribute and reconstruct single-qubit and two-qubit arbitrary quantum states between two parties via tripartite GHZ states in cavity QED without joint measurement. Our schemes offer a simple way of demonstrating quantum state sharing in cavity QED. We also consider the generalization of our schemes to distribute and reconstruct a quantum state among many parties.

Quantum dense coding via cavity decay

We investigate a scheme for implementing quantum dense coding via cavity decay and linear optics devices. Our scheme combines two distinct advantages: the atomic qubit serves as a stationary bit and the photonic qubit as a flying bit, thus it is suitable for long distant quantum communication.

Melting of 2D Monatomic Solids—Hard Disk and Square Well System

Using the Collins model of Liquids the melting of 2D monatomic solids is studied and the melting equation is derived. For the hard disk system our results agree with the computer simulation experiments quite well. For the square well system by means of the LHW theory the triple point and the melting line near the triple point is obtained to establish the phase boundary.

TELEPORTATION WITHOUT JOINT MEASUREMENT IN CAVITY QED

Schemes for the teleporting of the cavity mode state and the unknown atomic state are proposed in cavity quantum electrodynamics (QED) without joint Bell-state measurement (BSM). The presented schemes are implemented with separate atomic measurements instead of any type of joint measurement. The discussion of the scheme indicates that it can be realized by current technologies.