Anthony Laing, MSc

The New Scientist article Satellite quantum communication circles closer said

Communications protected by quantum encryption systems offer unconditional security — if you know which way is up. A new quantum protocol is the first that promises to work independently of orientation, which will prove vital if quantum communications are ever to be sent via satellites.
 
If information is encoded in the circular aspect of photon entanglement, it is possible for Alice and Bob to establish a quantum encryption key even if they lack a shared physical frame of reference.
 
The relatively simple system still leaves the problem of detecting eavesdroppers, but Anthony Laing, one of the team in Bristol, says that there are ways around that. Although the lack of a shared frame of reference precludes the use of conventional up/down spin-measurements to establish an encryption key, the sender and receiver can still measure them.
 
And a combination of such measurements on the string of photons used to encrypt the communication channel is enough to detect an eavesdropper. The mathematics is tricky, but “physics provides an inherent way to do it”, Laing claims.

Anthony Laing, MSc is a Ph.D. student at the H. H. Wills Physics Laboratory, University of Bristol, U.K.
 
His research interests include:

• Quantum optics, theory and experiment: Photonic quantum interference and generalized Hong-Ou-Mandel interference effects; spontaneous parametric down conversion and non-classical states of light; waveguide optical circuits for quantum information processing
• Entanglement and non-locality: Entanglement as a resource; fundamentals and entanglement; non-locality in higher dimensional systems; super-non locality (PR boxes)
• Hilbert space geometry: Geometric models of state representation for higher dimensional systems; generalizations of the Block sphere; geometry of multi-particle states
• Unitary operator representations and reconfigurable quantum optical circuits: Optical circuits constructed to different unitary decompositions

Anthony coauthored Multimode quantum interference of photons in multiport integrated devices, High-fidelity operation of quantum photonic circuits, A simple scheme for expanding photonic cluster states for quantum information, Reference frame independent quantum key distribution, and Experimental Quantum Process Discrimination. Read the full list of his publications!
 
Anthony earned his MSci (Hons) in Physics with Astrophysics at the University of Bristol in 2006.
 
Read Qutrits for quantum cryptography?