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Published on: April 4, 2017
Adiabatic Mach-Zehnder interferometry on a quantized Bose-Josephson junction.
1Nonlinear Physics Centre and ARC Centre of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia.
Physical Review Letters
|December 13, 2006
Summary
We propose a novel Mach-Zehnder interferometry scheme using a quantized Bose-Josephson junction. This method achieves Heisenberg-limited phase measurement precision via path entanglement, realizable with current technology.
Area of Science:
- Quantum physics
- Quantum optics
- Condensed matter physics
Background:
- Mach-Zehnder interferometry is a fundamental tool in quantum optics.
- Achieving high phase measurement precision is crucial for quantum sensing and metrology.
- Quantized Bose-Josephson junctions offer unique quantum properties.
Purpose of the Study:
- To propose a novel scheme for Mach-Zehnder interferometry.
- To enhance phase measurement precision to the Heisenberg limit.
- To utilize a quantized Bose-Josephson junction with negative charging energy.
Main Methods:
- Employing quantum adiabatic evolution through a dynamical bifurcation for beam splitting and recombination.
- Leveraging negative charging energy to create a path-entangled state.
- Presenting a feasible detection procedure.
Main Results:
- Demonstration of a scheme for Mach-Zehnder interferometry.
- Achieved phase measurement precision at the Heisenberg limit.
- Generation of a path-entangled state through negative charging energy.
Conclusions:
- The proposed scheme is feasible with current technology.
- The use of negative charging energy is key to achieving enhanced precision.
- This work offers a promising avenue for advanced quantum metrology.
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