The Prestige Lecture Series "Quantum Information Science Day" features lectures from
- Andrew Weiner, a distinguished professor of Electrical and Computer Engineering at Purdue University
Frequency Domain Quantum Photonics
Entanglement is a key resource for quantum information processing. Due to their robustness and unique capability for transmission over long distances, photons have proven to be an indispensable tool for investigation of entanglement and its applications. Discrete frequency bin entanglement – and encoding of quantum information in the frequency domain – is emerging as an active new research area. This form of photon entanglement offers potential both for practical advantages, e.g., compatibility with on-chip generation and fiber transmission, and for more fundamental ones, particularly generation of entangled states with high dimensionality (qudits rather than qubits). In this talk I discuss recent advances in manipulation and measurement of quantum states encoded and entangled in the photonic frequency degree of freedom or hyperentangled in time and frequency degrees of freedom. Although the perspective is primarily experimental, I will also attempt to provide examples of questions and challenges that connect to near-term quantum information.
- Peter Shor, professor of Applied Mathematics at MIT who is known for his work on quantum computation
Quantum Channel Capacities
In 1948, Shannon defined the notion of the capacity of a communication channel, and gave a formula for it. His paper essentially founded the field of information theory, and channel capacity is central in the theory and practice of information transmission. However, Shannon's formula does not apply to channels in which quantum effects are important. If the channel, the transmitter, and the receiver can all use quantum mechanics, we need a different formula. In fact, it turns out that there are several formulas for the capacity of a quantum channel, depending on whether you want to transmit classical information or quantum information, and which additional resources (e.g. feedback or entanglement) the receiver and sender are allowed to use. The lecture discusses these capacities of a quantum channel, focussing on the basics, but also mentions some recent developments.
Both the lectures will be held on April 8th, 2019 at Lawson Building, Room #1142
12:00 PM - 1:00 PM Andrew Weiner's lecture on "Frequency Domain Quantum Photonics"
1:00 PM - 2:30 PM Break
2:30 PM - 3:30 PM Peter Shor's lecture on "Quantum Channel Capacities"
For more information, please view the below poster.