Dr. Kero Lau

DrKLau

 

 

 

 

Email: kero.lau[at]uni-ulm.de
Tel: +49-731-50-22912
Room O25/452
Institute for Theoretical Physics
Ulm University
Albert-Einstein Allee 11
D-89081 Ulm, Germany

My Research Interests

I am currently funded by the Croucher Postdoctoral Fellowship to research under the theme of “Towards room temperature quantum information processing with diamond NV centers”. I mainly study an architecture of quantum processor that NV centres are coupled to the motional mode of a mechanical oscillator. While this architecture allows spatially separated NV centers to interact, the main challenge is to engineer sufficiently strong interaction strength that suppresses the effect of substantial unwanted thermal motion. We have been exploring ways to improve the interaction strength between the NV center and the oscillator, studying methods to cool the oscillator through coupling with NV centers, and modifying existing quantum information applications to implement on this architecture.

In general, I am interested in quantum information processing, such as communication and computation, in hybrid (between discrete and continuous variable) quantum systems. While existing quantum information applications are considered either in discrete or continuous variable setting, applications in hybrid systems receive much less attention. Interestingly, many today’s quantum systems are fundamentally hybrid, e.g. internal and motional states of trapped ions, polarization and phase space of photons. The study of hybrid quantum applications could hopefully bring together the best of both worlds.

My selected Publications

Insecurity of position-based quantum-cryptography protocols against entanglement attacks
H.-K Lau and H.-K Lo
Phys. Rev. A 83, 012322 (2011)

Proposal for a scalable universal bosonic simulator using individually trapped ions
H.-K. Lau and D. F. V. James
Phys. Rev. A 85, 062329 – Published 28 June 2012; Erratum Phys. Rev. A 86, 059905 (2012)

Quantum secret sharing with continuous-variable cluster states
H.-K. Lau and C. Weedbrook
Phys. Rev. A 88, 042313 (2013)

Diabatic ion cooling by phonon swapping during controlled collision
Hoi-Kwan Lau
Phys. Rev. A 90, 063401 (2014)

Inferring physical parameters of compact stars from their f-mode gravitational wave signals
H.-K. Lau, P. T. Leung, and L. M. Lin
ApJ 714, 1234 (2010)

 

My Publications and preprints on Google Scholar

Please visit my personal website