Serving Eastern Massachusetts
Boston Photonics Society Chapter
7:00 PM, Thursday, 9 February
Integrated Quantum Photonics
Dr. Mark Thompson, University of Bristol, UK
Quantum information technologies offer a new and powerful approach to processing and communicating information. By harnessing the strange quantum mechanical properties of photons (such as superposition and entanglement), quantum photonic technologies aim to realize new advancements in communications, metrology and computation. Quantum information processing promises huge computation power, whilst quantum communications offers the ultimate in information security - guaranteed by the laws of physics.
Until recently, optical implementations of quantum architectures have been realized using large-scale (bulk) optical elements, bolted onto optical tables. This approach has lead to severe limitations in the miniaturization, scalability, stability and performance of such systems. In this talk I will present an integrated waveguide architecture that overcomes this bottleneck to enable integrated photonic quantum circuits for high performance, miniaturization and scalability.
In this talk I will describe recent developments, including the high fidelity operation of key quantum photonics components, such as on-chip two-photon quantum interference and controlled-NOT logic gates. Other advancements include the control and manipulation of up to four photons on-chip, dynamically reconfigurable circuits for on-chip entanglement generation and manipulation, a small-scale quantum factoring algorithm and the quantum simulation of bosonic, fermonic and anyonic multi-particle quantum walks. I will describe our latest results on the fast manipulation of path and polarization encoded qubits, heralded entanglement generation for quantum metrology, on-chip photon pair generation and new material systems for added functionality. These results represent key steps that are crucial for the development of practical quantum photonic technologies for applications in quantum communication, metrology, simulation, computation and fundamental science.
Mark
Thompson is a lecturer and researcher fellow at the University of
Bristol within the departments of Physics and Electrical Engineering. He
holds a master degree in Physics from University of Sheffield and a PhD
in Electrical Engineering from the University of Cambridge. Prior to his
PhD he was a researcher scientist at Bookham Technology Inc developing
silicon-based integrated photonic components for the telecommunications
industry. His PhD studies focused on semiconductor laser dynamics and
ultra-short pulse generation in quantum-dot mode-locked lasers diodes,
and in 2006 he was appointed a research fellowship position at the
University of Cambridge. He won the 2009 Toshiba Fellowship award and
held a visiting researcher position at the Toshiba research headquarters
in Japan, developing silicon photonic components for computing
applications. Since 2008 he has held a permanent position at the
University of Bristol where he leads a team of researchers developing
integrated quantum photonic technologies. He has been involved in many
national and international projects, and is coordinator of the EU-FP7
project “QUANTIP”.
This meeting begins at 7:00 PM, Thursday, Feb. 9th, 2012 and will be located in the cafeteria at MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02420. The meeting is free and open to the public. All are welcome. Prior to the meeting there will be a speaker's dinner at 5:30pm at Lemon Grass Thai restaurant in Lexington Center (1710 Mass Ave., Lexington, MA). Please join us if you can (RSVP helpful). For more information contact Robert Stephenson, Boston IEEE Photonics Society Chapter chair at robert.stephenson@ieee.org, or visit the Boston IEEE Photonics Society website at www.bostonphotonics.org.
Directions to Lincoln Laboratory: (from interstate I-95/Route 128
From Exit 31B
- Take Exit 31B onto Routes 4/225 towards Bedford - Stay in right lane
- Use Right Turning Lane (0.3 mile from exit) to access Hartwell Ave. at 1st Traffic Light.
- Follow Hartwell Ave. to Wood St. (~1.3 miles).
- Turn Left on to Wood Street and Drive for 0.3 of a mile.
- Turn Right into MIT Lincoln Lab at the Wood Street Gate
- Have a valid driver’s license to present to security.
From Exit 30B
- Take Exit 30B on to Route 2A - Stay in right lane
- Turn Right on to Mass. Ave (~ 0.4 miles - opposite Minuteman Tech.).
- Follow Mass. Ave for ~ 0.4 miles.
- Turn Left on to Wood Street and Drive for 1.0 mile.
- Turn Left into MIT Lincoln Lab at the Wood Street Gate
- Have a valid driver’s license to present to security.
To get to the Cafeteria, proceed toward the Main Entrance of Lincoln Laboratory. Before entering the building, proceed down the stairs located to the left of the Main Entrance. Turn right at the bottom of the stairs and enter the building through the Cafeteria entrance. The Cafeteria is located directly ahead.
Unsubscribe link: BOSTONPHOTONICS-SIGNOFF-REQUEST@LISTSERV.IEEE.ORG
7:00 PM, Thursday, 12 January
Quantum dot light-emitting device development at QD Vision: Bright lights from little dots
Dr. Charles Hamilton, QD Vision, Lexington, MA
When shrinking a bulk semiconductor material to the size of a nanocrystal, several properties of the material change due to a phenomenon called quantum confinement. One of the consequences of quantum confinement is that the band gap of the semiconductor can be precisely tuned by controlling the average size of the crystals. These quantum dots (QDs) have unique properties as they are broad-band absorbers, narrow emitters, and in many cases have near-unity quantum yield. By efficiently converting bluer light into redder light, QDs have already been used in lighting products, and show potential to be adopted into liquid crystal display products in the near future.
Another application for QDs is to function as the emissive layer of a light emitting diode. These quantum dot light emitting devices (QLEDs) are an emerging class of thin-film hybrid organic-inorganic structures, which could potentially achieve best-in-class performance amongst large-area emissive light sources. In this presentation, we will present recent advancements in both device design and materials performance that has enabled QLEDs to achieve near-unity internal quantum efficiency. In addition, we will discuss QD printing methods that have allowed the creation of active matrix QLED displays.
Charles
Hamilton is a member of the chemistry team at QD Vision where he
currently leads the electroluminescent materials development group. Dr.
Hamilton received his Ph.D. in inorganic chemistry from the
Massachusetts Institute of Technology in Jan. 2007. There he worked
primarily on homogeneous catalyst synthesis, development and mechanistic
studies. After MIT, Dr. Hamilton received a post-doctoral position at
Los Alamos National Laboratory applying his knowledge of synthetic
chemistry to activate chemical hydrogen storage materials. Through
funding of the DOE’s chemical hydrogen storage center of excellence, his
advances made it possible to use cheap iron-based catalysts instead of
expensive noble metal-based catalysts greatly increasing the
practicality of a chemical hydrogen storage system. In Dec. 2008, Dr.
Hamilton accepted a senior chemist position at QD Vision. Since then, he
has been focused on material development in support of various
applications, especially quantum dot light-emitting devices.
This meeting begins at 7:00 PM Thursday, Jan. 12th, 2012 and will be located in the cafeteria at MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02420. The meeting is free and open to the public. All are welcome. Prior to the meeting there will be a speaker's dinner at 5:30pm at Lemon Grass Thai restaurant in Lexington Center (1710 Mass Ave., Lexington, MA). Please join us if you can (RSVP helpful). For more information contact Robert Stephenson, Boston IEEE Photonics Society Chapter chair at robert.stephenson@ieee.org, or visit the Boston IEEE Photonics Society website a www.bostonphotonics.org.
Directions to Lincoln Laboratory: (from interstate I-95/Route 128)
From Exit 31B
Take Exit 31B onto Routes 4/225 towards Bedford - Stay in right lane
Use Right Turning Lane (0.3 mile from exit) to access Hartwell Ave. at 1st Traffic Light.
Follow Hartwell Ave. to Wood St. (~1.3 miles).
Turn Left on to Wood Street and Drive for 0.3 of a mile.
Turn Right into MIT Lincoln Lab at the Wood Street Gate
Have a valid driver’s license to present to security.
From Exit 30B
Take Exit 30B on to Route 2A - Stay in right lane
Turn Right on to Mass. Ave (~ 0.4 miles - opposite Minuteman Tech.).
Follow Mass. Ave for ~ 0.4 miles.
Turn Left on to Wood Street and Drive for 1.0 mile.
Turn Left into MIT Lincoln Lab at the Wood Street Gate
Have a valid driver’s license to present to security.
To get to the Cafeteria, proceed toward the Main Entrance of Lincoln Laboratory. Before entering the building, proceed down the stairs located to the left of the Main Entrance. Turn right at the bottom of the stairs and enter the building through the Cafeteria entrance. The Cafeteria is located directly ahead.
Unsubscribe link: BOSTONPHOTONICS-SIGNOFF-REQUEST@LISTSERV.IEEE.ORG