Physics Education Centre

# Potential summer scholars research projects

The Research School of Physics & Engineering performs research at the cutting edge of a wide range of disciplines.

By undertaking your own research project at RSPE you could open up an exciting career in science.

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## Filter projects

## Atomic and Molecular Physics

### Optical quantum memory

An optical quantum memory will capture a pulse of light, store it and then controllably release it. This has to be done without ever knowing what you have stored, because a measurement will collapse the quantum state. We are exploring a "photon echo" process to achieve this goal.

## Engineering in Physics

### Generation of random numbers from vacuum fluctuations

Aim to generate random numbers by performing a homodyne measurement of the quantum vacuum state.

## Photonics, Lasers and Nonlinear Optics

### Second Harmonic Generation for Quantum Optics Applications

Student will develop a source of laser light at 775nm that will be utilised for pumping of squeezing cavities

### Bayesian estimation of min-entropy

In order to build a random number generator, we need to estimate the amount of randomness it has. Our aim to estimate the min-entropy of a finite sample of data using the Bayesian and Frequencist estimators.

### Development of Squeezed Laser Sources for Quantum Communication

Student will build and characterise a new source of quantum squeezed light genearted from an optical parametric oscillator

## Quantum Devices and Technology

### Second Harmonic Generation for Quantum Optics Applications

Student will develop a source of laser light at 775nm that will be utilised for pumping of squeezing cavities

### Beam matching using machine learning

This project aims to use a machine learning algorithm to perform beam alignment in an optics experiment. It would involve mode-matching two optical beams using motorised mirror mounts. Additional degrees of freedom like lens positions and beam polarisation can be added later.

### Source-independent quantum random number generator

We aim to generate random numbers by performing orthogonal quadrature homodyne measurements without actually knowing or trusting the quantum state that we are measuring.

### Optical quantum memory

An optical quantum memory will capture a pulse of light, store it and then controllably release it. This has to be done without ever knowing what you have stored, because a measurement will collapse the quantum state. We are exploring a "photon echo" process to achieve this goal.

### Development of Squeezed Laser Sources for Quantum Communication

Student will build and characterise a new source of quantum squeezed light genearted from an optical parametric oscillator

## Quantum Science and Applications

### Quantum coherence and metrology

A quantum state has "coherence" if it is in a superposition of some classical states. In some way, coherence measures the quantumness of that state. We aim to study the coherence of simple systems and also establish a relationship between coherence and quantum metrology.

### Quantum super resolution

When two point sources of light are close together, we just see one blurry patch. This project aims to use coherent measurement techniques in quantum optics to measure the separation between the point sources beyond the Rayleigh's limit.

### Source-independent quantum random number generator

We aim to generate random numbers by performing orthogonal quadrature homodyne measurements without actually knowing or trusting the quantum state that we are measuring.

### Two-parameter estimation with Gaussian state probes

How well we can estimate the position and momentum of a Gaussian probe?

### Generation of random numbers from vacuum fluctuations

Aim to generate random numbers by performing a homodyne measurement of the quantum vacuum state.

### Bayesian estimation of min-entropy

In order to build a random number generator, we need to estimate the amount of randomness it has. Our aim to estimate the min-entropy of a finite sample of data using the Bayesian and Frequencist estimators.

## Theoretical Physics

### Quantum coherence and metrology

A quantum state has "coherence" if it is in a superposition of some classical states. In some way, coherence measures the quantumness of that state. We aim to study the coherence of simple systems and also establish a relationship between coherence and quantum metrology.

*Other research projects may be found at the ANU College of Engineering & Computer Science and the Research School of Astronomy & Astrophysics*