Giant Unruh effect in hyperbolic metamaterial waveguides

Area of Science:

• Quantum physics
• Condensed matter physics
• Metamaterials

Background:

• The Unruh effect predicts thermal radiation for accelerating observers in vacuum.
• Experimental verification is challenging due to extremely low temperatures at achievable accelerations (e.g., 9.8 m/s² yields 4×10⁻²⁰ K).

Purpose of the Study:

• To explore novel systems for simulating and experimentally probing the Unruh effect.
• To investigate the behavior of quantum systems under extreme acceleration.

Main Methods:

• Utilizing metamaterial waveguides to create conditions where photons behave as massive quasi-particles.
• Achieving effective accelerations up to 10²⁴ g within these engineered environments.

Main Results:

• Demonstrated that photons in metamaterial waveguides can undergo accelerations vastly exceeding those typically considered for Unruh effect experiments.
• These simulated accelerations are approximately 12 orders of magnitude greater than the surface acceleration of a stellar black hole.

Conclusions:

• Metamaterial waveguides offer a promising platform for experimentally studying the Unruh effect.
• The high accelerations achieved may also facilitate research into the loss of quantum entanglement in strongly accelerated frames.