14 day Visit to Army Research Laboratory (ARL) for collaborative discussions with ARL
Abstract
Entanglement is the uniquely quantum phenomenon in which the observable properties of two or more particles can be correlated regardless of the physical distance-between them. This interesting physical property is responsible for the advantage many quantum information applications, such as quantum key distributions and quantum computing, have over their classical counterparts. In its simplest form, entanglement is between two systems and is in a single degree of freedom, such as polarization, energy, or angular momentum among many others. Recently, however, it has become possible to entangle two particles in more than one degree of freedom at the same time, causing correlations between multiple degrees of freedom simultaneously. This is referred to as hyperentanglement and is a more useful quantum resource than entanglement due to the expanded set of possible states, referred to as an expansion of Hilbert space, that comes along with adding in new degrees of freedom. In this way a single pair of hyperentangled particles can be used to encode more quantum bits, or qubits, than merely entangled. Primarily we will explore how higher-alphabet encoding schemes in quantum networks can be realized using hyperentanglement. This will greatly improve the efficiency of quantum networking protocols because it will allow for quantum error correction, realized through redundant encoding, to be used with a single pair of particles and allow for more information transfer per transmission. Further, we plan on exploring novel methods for the generation of hyperentanglement between photons using Ôoff the shelfÕ equipment in our lab. If successful, this will greatly simplify the process of creating hyperentanglement, making it a more realistic resource for use in future quantum networks.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 06, 2018
- Source ID
- W911NF1710396
Entities
People
- Mark Shtaif
Organizations
- Army Contracting Command
- Tel Aviv University
- United States Army