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Mesoscopic Quantum Optics
J.-Prof. Dr. Tim Bartley

Research & Facilities

The MQO group investigates fundamental physics and develops quantum applications with mesoscopic-sized quantum states of light, all underpinned by enabling technology. Mesoscopic quantum optical states comprise 10s, 100s and 1000s of nonclassically-distributed photons. From a fundamental perspective, they can be used to explore quantum physics at energy scales that are visible to the human eye, thereby exposing some of the highly counter-intuitive phenomena of quantum mechanics at a human scale. In addition, this scale is crucial for demonstrating a genuine quantum enhancement over classical schemes in many areas including metrology, computation and communication.

In this context, the research of the MQO group can be divided into three areas: developing enabling technology for mesoscopic quantum optics, fundamental physics with mesoscopic quantum states, and applications of mesoscopic quantum optics. 

In mesoscopic quantum optics we seek tools to generate lots of photons, manipulate them coherently and measure them efficiently. Almost all of these tasks are made easier by using techniques in integrated optics, and lithium niobate is an ideal integration platform. We develop technology to enable experiments that cannot be achieved using any other means.

Quantum optics with many photons is largely unexplored territory. Using the tools we develop, we can begin to explore and understand this regime, investigating phenomena such as a entanglement, superposition and wave-particle duality with 1000s of photons. 

 

Crucial to exploiting the quantum advantage in fields like computation, communication and metrology is coherently manipulating quantum states with large numbers of photons. Through the tools and techniques of integration and large state manipulation, we can develop protocols which offer a genuine quantum advantage over classical schemes.

Head

J.-Prof. Dr. Tim Bartley

Mesoscopic Quantum Optics

Tim Bartley
Phone:
+49 5251 60-5881
Office:
P8.3.13

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