Creating long chain entanglement using a phase sensitive micromaser
Lead Research Organisation:
University of Leeds
Department Name: Physics and Astronomy
Abstract
In cavity QED the atom and cavity field are strongly coupled, so strong, that this effect dominates all others and for the duration of the interaction the system becomes an ideal, dissipation free quantum system. This effect is strongest in the microwave regime. The aim of the current project is to construct a one atom maser to investigate the possibility of creating long chains of entangled atoms. This follows a recent experiment by my group in which large ensembles of atoms were created exhiting correlations between all atoms of the ensemble. The one atom maser will be constructed to investigate this effect further and determine if these atoms are entangled. Once consturcted however the one atom maser will becoe the central of a broader experimental investigation into cavity QED and quantum information.
People |
ORCID iD |
| Benjamin Varcoe (Principal Investigator) |
Publications
Benjamin Varcoe (Author)
(2011)
International Journal of Unconventional Computing
in International Journal of Unconventional Computing
Everitt M
(2011)
Creating and observing N -partite entanglement with atoms
in Journal of Physics B: Atomic, Molecular and Optical Physics
Johnson L
(2010)
Absolute frequency measurements of 85 Rb n F 7/2 Rydberg states using purely optical detection
in New Journal of Physics
Johnson L
(2011)
A three-step laser stabilization scheme for excitation to Rydberg levels in 85Rb
in Applied Physics B
Jones M
(2011)
Evolutionary optimization of state selective field ionization for quantum computing
in Applied Soft Computing
Jones M
(2009)
Single microwave photon detection in the micromaser
in Journal of Physics B: Atomic, Molecular and Optical Physics
Sanguinetti B
(2009)
Precision measurements of quantum defects in the n P 3/2 Rydberg states of 85 Rb
in Journal of Physics B: Atomic, Molecular and Optical Physics
| Description | We have discovered how to manipulate microwaves at a quantum level and we have discovered how to apply this in a practical sense to deliver new advances in quantum information science as practical demonstrations. This is an extremely important goal as microwaves are normally considered to be extremely classical and therefore "wave like". Hence our ability to think in terms of microwave photons in an ordinary communications system such as mobile phones or satellite communications is a great technological advance. |
| Exploitation Route | We are already working with commercial partners to exploit these developments. This will ensure that what we have learnt will be widely disseminated and become the backbone of future communications technologies. |
| Sectors | Aerospace Defence and Marine Digital/Communication/Information Technologies (including Software) Electronics Healthcare Security and Diplomacy |
| Description | Subsequent to this award we have been awarded a research grant by Airbus Defense and space to develop quantum key distributions schemes for satellite based key distribution. We have received funding for a spinout company to develop quantum key distribution schemes in the microwave. We have also developed a spinout company to exploit outcomes of the research to provide an A&E department the ability to diagnose heart attack within a few minutes of a patients arrival. This will but hours out of the pathway and positively filter out well people without requiring an overnight stay. This will have a dramatic economic and social impact. |
| First Year Of Impact | 2010 |
| Sector | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Healthcare,Security and Diplomacy |
| Impact Types | Societal Economic |
| Description | Magnetometer for the detection of cardiac magnetic fields |
| Amount | £75,000 (GBP) |
| Funding ID | IKC: Proof of Concept ? Magnetic Medical Imaging LB02 |
| Organisation | University of Leeds |
| Department | Medical Technologies IKC |
| Sector | Academic/University |
| Country | United Kingdom |
| Start | |
| Description | Max Planck Inst for Quantum Optics |
| Organisation | Max Planck Society |
| Department | Max Planck Institute of Quantum Optics |
| Country | Germany |
| Sector | Charity/Non Profit |
| Start Year | 2007 |
| Description | Medical Imaging |
| Organisation | Quantum Imaging |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Contribution of know how and intellectual property |
| Collaborator Contribution | Contracting development partners, constructing devices, providing business development and access to clinicians. |
| Impact | Still active, none to report yet. |
| Start Year | 2014 |
| Description | Quantum Communication |
| Organisation | Airbus Group |
| Department | Airbus Defence & Space |
| Country | United States |
| Sector | Private |
| PI Contribution | Contribution of know how and intellectual property |
| Collaborator Contribution | Know how, devices funding and direction. |
| Impact | The collaboration is on going and yet to produce specific, reportable, outputs |
| Start Year | 2014 |
| Title | MAGNETOMETER FOR MEDICAL USE |
| Description | A medical magnetometer (10) comprising one or more induction coils (2) for detecting a time varying magnetic field of a region of a subject's body, such as the heart. Each coil has a maximum outer diameter of 4 to 7 cm, and a configuration such that the ratio of the coil's length to its outer diameter is at least 0.5, and the ratio of the coil's inner diameter to its outer diameter is 0.5 or less. Each induction coil (2) is coupled to a respective detection circuit comprising a low impedance pre-ampiifier (3), a low pass filter (5), a notch filter (6) to remove line noise, and an averaging element (7). Each detection circuit produces an output signal (9) for use to analyse the time varying magnetic field of the region of the subject's body. |
| IP Reference | WO2014006387 |
| Protection | Patent application published |
| Year Protection Granted | 2014 |
| Licensed | Yes |
| Impact | Licensed to Quantum Imaging for the development of devices for rapid detection of myocardial infarction. |
| Title | SECURE COMMUNICATION |
| Description | A method for allowing a first party and a second party to obtain shared secret information is provided. The method comprises the steps of: obtaining, by the first party, a sequence of values A=X+N A where X is a sequence of values and N A is a random sequence associated with the first party; obtaining, by the second party, a sequence of values B=X+N B where N B is a random sequence associated with the second party; performing, by the first and second parties, a data matching procedure to identify corresponding pairs of values, a j , b j , in respective sequences A and B that match, wherein sequences A and B are discrete-valued sequences equal to, derived from, or derived using, sequences A and B; wherein the shared secret information is equal to, or derived from, or derived using, the matching values in sequences A and B. |
| IP Reference | WO2013175224 |
| Protection | Patent application published |
| Year Protection Granted | 2013 |
| Licensed | Commercial In Confidence |
| Impact | Currently working with Airbus defense and space on the development of commercial applications of quantum cryptography. |
| Title | Medical magnetic field mapping |
| Description | This is a device for the rapid assessment of cardiac chest pain in an emergency department. The device is currently under development for commercial release in 2015. |
| Type | Diagnostic Tool - Imaging |
| Current Stage Of Development | Early clinical assessment |
| Year Development Stage Completed | 2014 |
| Development Status | Under active development/distribution |
| Impact | No reportable developments yet. |
| URL | http://quantumimaging.eu |
| Company Name | Creavo |
| Description | Creavo develops non-invasive diagnostic techniques to detect ischemia and other circulatory conditions. |
| Year Established | 2014 |
| Impact | Currently developing new modalities for the assessment of cardiovascular disease with a CE marked device due mid 2015. |
| Website | http://www.quantumimaging.eu |
| Company Name | Cryptographiq Limited |
| Description | |
| Year Established | 2012 |
| Impact | Currently working with the University of Leeds and Airbus Defense and Space on the development of Satellite based quantum cryptography. |
| Website | http://www.ipgroupplc.com |
| Description | Breakthrough heart scanner will allow earlier diagnosis |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | EPSRC press release. The press release stimulated a lot of interest in the development of cardiac magnetometery and has led to the formation of a company to exploit the intellectual property. |
| Year(s) Of Engagement Activity | 2010 |
| Description | MAGNETOMETRY USING ELECTROMAGNETICALLY INDUCED TRANSPARENCY IN A ROOM TEMPERATURE VAPOUR CELL |
| Form Of Engagement Activity | Scientific meeting (conference/symposium etc.) |
| Part Of Official Scheme? | No |
| Type Of Presentation | paper presentation |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Conference presentation. First international disclosure of our work in small field sensing The activity informed our opinion of the field and our place in it. There was, and still is, a large amount of interest in this output that has stimulated further work and ultimately a successful spinout comapny. |
| Year(s) Of Engagement Activity | 2009 |
| URL | http://quantumimaging.eu |