It seems the warp drive is some time away yet but what about faster than light communication, could that work? Accelerating macroscopic objects, like spacecraft requires high amounts of negative energy but communication, as a recent paper explains, which operates at much smaller scale requires less energy

According to the current scientific consensus, faster-than-light communication is not possible. This is because nothing can travel faster than light according to the accepted laws of science. 

Superluminal communication is the hypothetical process of conveying information at faster-than-light speeds. However, no experiment has been able to achieve this

Warp speed is faster than light speed. In Star Trek, warp one is equal to the speed of light. Warp speeds greater than warp one are multiples of the speed of light. In the episode “The 37’s” from Star Trek: Voyager, warp 9.9 is 21,400 times faster than the speed of light.

Warp speed is a fictional spacecraft propulsion system that allows travel faster than light. It’s a key concept in many science fiction works, including Star Trek. 

The speed of light in a vacuum is a universal physical constant that’s equal to 299,792,458 meters per second. This is about 300,000 kilometers per second, 186,000 miles per second, or 671 million miles per hour.

According to Einstein’s theory of relativity, the speed of light is the fastest speed in the universe. It’s impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so. 

However, there are some hypothetical particles that could travel faster than light: 

• Tachyons These particles would allow for communication back in time, which would violate a fundamental rule of the universe. 
• Light Light can travel faster than the speed of light when not in the vacuum of space.

Based on our current understanding of physics, it’s not possible to travel faster than light. The speed of light is considered the cosmic speed limit. 

However, it’s theoretically possible to get close to the speed of light. Time behaves differently when traveling close to the speed of light, allowing someone to move forward in time faster than those left behind. This means it’s possible to travel to the future, but not return.

According to Einstein’s theory of relativity, if something were to travel faster than the speed of light, it would move backward in time. This would violate causality. 

If an object with mass were to reach the speed of light, its mass would become infinite. The energy required to move it would also become infinite. 

If you could reach the speed of light, time would stop for you. If you traveled at the speed of light to the center of the galaxy, nearly 30,000 years would have passed on Earth by the time you arrived.

Warp speed is not possible because it would require an amount of energy that is currently impossible. To warp space-time to move faster than the speed of light, you would need to create a black hole. However, only the space-time inside the event horizon of the black hole moves faster than light. 

You would also need matter that can be ejected at speeds faster than light. However, no known particles can travel that fast.

The Alcubierre drive is a fictional warp drive that warps space-time around a vessel. It’s not possible because it requires negative matter, which is a hypothetical substance that generates negative gravity. Negative matter has never been observed and is not expected to occur in the Standard Model of particle physics

Other problems with the Alcubierre drive include: 

• Energy: The drive requires unreasonably high energies. 
• Spacetime: The drive violates the energy conditions of classical Einstein gravity. 
• Time travel: The drive would allow time travel into the past. 
• Engineering: The drive would require radical curvature on extended regions of space. 

The Alcubierre drive’s proposed mechanism implies a negative energy density. This would require exotic matter or manipulation of dark energy. Negative energy is a mathematical artifact and not a physical phenomenon

Superluminal communication is the hypothetical process of transmitting information at speeds faster than light. It’s also known as faster-than-light (FTL) or supercausal communication

The current scientific consensus is that faster-than-light communication is not possible. No experiment has ever achieved it. However, some say that if particles are communicating with each other at a speed faster than light, but not infinite, it may be possible to send messages faster than the speed of light. 

Some keywords related to superluminal communication in quantum mechanics include: 

• Polarize Beam Splitter 
• Alice Measure 
• Superluminal Motion 
• Wave Function Collapse 
• Superluminal Signaling

According to Albert Einstein’s theory of special relativity, the speed of light is a cosmic speed limit that cannot be surpassed. This is because it would take an infinite amount of energy to accelerate any material object up to the speed of light. 

However, some have suggested workarounds that could allow for faster-than-light communication. For example, entangled particles can share information with each other instantaneously, seemingly breaking the rule that no information can be transmitted faster than the speed of light.

According to Albert Einstein’s theory of special relativity, the speed of light is a cosmic speed limit that cannot be surpassed. This is because it would take an infinite amount of energy to accelerate any material object up to the speed of light. 

However, some say that light itself can travel faster than the speed of light, but only when not in the vacuum of space. Light will never exceed its maximum speed of 186,282 miles per second. 

Some hypothetical particles, like tachyons, could always travel faster than the speed of light. Einstein showed that these particles could allow for communication back in time.

Teleportation doesn’t exist in reality, only in science fiction. There’s no way to measure its speed. However, if matter were converted into energy, teleported, and then converted back into matter, it would travel at the speed of light. 

Quantum teleportation doesn’t travel faster than the speed of light. It relies on the instantaneous transfer of information through entanglement. However, quantum teleportation can’t happen faster than the speed of light because classical information needs to be sent. 

According to a paper published in PrX Quantum, NASA quantum-teleported data faster than the speed of light. The teleportation had a fidelity of 90 percent, which refers to the similarity of the signals of the qubits from the two laboratories( full article source google)

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