# Experimental simulation of closed timelike curves.

@article{Ringbauer2014ExperimentalSO, title={Experimental simulation of closed timelike curves.}, author={Martin Ringbauer and Matthew A. Broome and Casey R. Myers and Andrew G. White and Timothy C. Ralph}, journal={Nature communications}, year={2014}, volume={5}, pages={ 4145 } }

Closed timelike curves are among the most controversial features of modern physics. As legitimate solutions to Einstein's field equations, they allow for time travel, which instinctively seems paradoxical. However, in the quantum regime these paradoxes can be resolved, leaving closed timelike curves consistent with relativity. The study of these systems therefore provides valuable insight into nonlinearities and the emergence of causal structures in quantum mechanics--essential for any…

## 36 Citations

### Closed timelike curves and the second law of thermodynamics

- PhysicsPhysical Review A
- 2019

One out of many emerging implications from solutions of Einstein's general relativity equations are closed timelike curves (CTCs), which are trajectories through spacetime that loop back on…

### Quantum causality in closed timelike curves

- Physics
- 2015

Although general relativity allows the existence of closed timelike curves (CTCs), self-consistency problems arise (the ‘grandfather paradox’ among others). It is known that quantum mechanical…

### Theoretical description and experimental simulation of quantum entanglement near open time-like curves via pseudo-density operators

- PhysicsNature Communications
- 2019

The authors show how to use the formalism of pseudo-density operators to describe such a process, showing a proof-of-principle experimental simulation of any space-time correlations violating entanglement monogamy, such as those arising in black holes.

### Quantum Entanglement Near Open Timelike Curves

- Physics
- 2019

Closed timelike curves are striking predictions of general relativity allowing for time-travel. They are afflicted by notorious causality issues (e.g. grandfather’s paradox). Quantum models where a…

### Holographic dual of a time machine.

- Physics
- 2016

We apply the $AdS/CFT$ holography to the simplest possible eternal time machine solution in $AdS_3$ based on two conical defects moving around their center of mass along a circular orbit. Closed…

### Quantum Physics, Fields and Closed Timelike Curves: The D-CTC Condition in Quantum Field Theory

- Physics
- 2016

The D-CTC condition has originally been proposed by David Deutsch as a condition on states of a quantum communication network that contains “backward time-steps” in some of its branches. It has been…

### Closed Timelike Curves, Singularities and Causality: A Survey from Gödel to Chronological Protection

- Physics
- 2021

I give a historical survey of the discussions about the existence of closed timelike curves in general relativistic models of the universe, opening the physical possibility of time travel in the…

### Time travel without paradoxes: Ring resonator as a universal paradigm for looped quantum evolutions

- PhysicsPhysics Letters A
- 2019

### The D-CTC Condition in Quantum Field Theory

- PhysicsProgress and Visions in Quantum Theory in View of Gravity
- 2020

A condition proposed by David Deutsch to describe analogues of processes in the presence of closed timelike curves (D-CTC condition) in bipartite quantum systems is investigated within the framework…

### The holographic glass bead game : from superconductivity to time machines

- Physics
- 2015

The thesis is devoted to applications of the anti de Sitter/Conformal field theory correspondence (AdS/CFT, also called holography) to various problems in different areas of theoretical physics.
We…

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