Welcome to Chao Wang(王超)'s
Quantum Mechanics (QM) is a completely new description of the universe
comparing to classical physics, which was proposed and researched since
early 20th century. Different from the conventional theories, the QM
indicates that the microscopic world follows the principle of probability,
which means the observables of a micro-particle, photon for example, can
have two values, with a certain probability.
From the basic principle of QM, several fundamental laws can be derived:
1. No-Cloning Theorem
It is impossible to create an identical copy of an arbitrary unknown
2. Wave function collapse
The measurement process will introduce a collapse to the wavefunction
of a particle, unless the measurement basis happens to be the eigenstate of
the quantum state.
3. Heisenberg's uncertainty principle
Any pair of non-commuting self-adjoint operators representing
observables are subject to uncertainty limits, which means these two
observables cannot be pricisely measured at the same time.
Quantum inforamtion is a booming research field that ultilize the singular
characteristics of QM for secrete information transmission as well as the
The quantum key distribution (QKD), is an important branch of the quantum
information research. Together with the one time pad theory, the only
crystallographic scheme whose security has been theoretically proved so far,
QKD provides an unconditional secure way to share secrete keys among remote
The first QKD protocol, Bennet-Brassard 1984 (BB84) is an simple and clear
We are working on safer, faster, and more robust QKD protocols and systems
for practical use.
If you are interested please contact us!
"Video of a day in the Future" by NICT,
Tokyo, Japan (Youtube