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### Table of Contents:

- What companies are making quantum computers?
- Who is leading in quantum computing?
- Is D-Wave Systems publicly traded?
- Does NASA have a quantum computer?
- How fast is quantum computing?
- Who invented quantum computing?
- Can you build a quantum computer at home?
- Does a quantum computer exist?
- How much would a quantum computer cost?
- Does China have a quantum computer?
- What can a quantum computer do that a classical computer can t?
- What kind of problems can a quantum computer solve?
- Why is a quantum computer faster?
- Why is quantum computing so powerful?
- What are the disadvantages of quantum computing?
- How long would it take a quantum computer to crack my password?
- Is quantum computer faster than supercomputer?
- Did Google achieve quantum supremacy?
- Will quantum computers replace classical computers?
- Why do quantum computers need to be so cold?
- What is a quantum computer made of?

## What companies are making quantum computers?

**Companies focused on quantum computing**

- Atom Computing. Atom Computing is a quantum computing hardware company specializing in neutral atom quantum computers. ...
- Xanadu. ...
**IBM**. ...- ColdQuanta. ...
**Zapata Computing**. ...- Azure Quantum. ...
- D-Wave. ...
- Strangeworks.

## Who is leading in quantum computing?

And earlier this month, a team under the direction of Pan Jianwei at the University of Science and Technology in China (USTC), said its **quantum computer** succeeded in performing a calculation 100 trillion times faster than a conventional **computer** could — surpassing Google's achievement by a factor of 10 billion, ...

## Is D-Wave Systems publicly traded?

Founded in 1999, **D**-**Wave** has seen the largest inflow of private capital (now over $200m invested) of all QC companies and continues to be held **privately**.

## Does NASA have a quantum computer?

In support of **NASA's Quantum** Artificial Intelligence Laboratory (QuAIL), the NAS facility hosts a 2,048-qubit D-Wave 2000Q™ **quantum computer**. The hardware performs **quantum** annealing—an optimization process that takes advantage of **quantum** effects such as superposition and tunneling. ...

## How fast is quantum computing?

Google announced it has a **quantum computer** that is 100 million times **faster** than any classical **computer** in its lab. Every day, we produce 2.

## Who invented quantum computing?

Isaac Chuang

## Can you build a quantum computer at home?

It should be mentioned before I start that technically, **you** cannot **build** a fully-functioning **quantum computer** that runs **quantum** algorithms in your **home** (unless **you** have millions of dollars, access to fabrication and research facilities, and lots of dedicated time, in which case **we** probably need your help, rather than ...

## Does a quantum computer exist?

**Quantum computers** were first proposed about 40 years ago, but they are only now becoming real machines. Making and controlling **quantum computers** has been elusive because their **quantum** weirdness arises from conditions that are hard to maintain.

## How much would a quantum computer cost?

The first working 12-qubit **quantum computer**. D-Wave releases the first commercially available **quantum computer**. It **costs** $10m.

## Does China have a quantum computer?

This week in future tech, a Chinese **quantum computer** can reportedly solve a problem in 200 seconds, compared to the 2.

## What can a quantum computer do that a classical computer can t?

**What can a quantum computer do that a classical computer can't**? Factoring large numbers, for starters. Multiplying two large numbers is easy for any **computer**. But calculating the factors of a very large (say, 500-digit) number, on the other hand, is considered impossible for any **classical computer**.

## What kind of problems can a quantum computer solve?

**Encryption** and Cybersecurity These probably the most known kind of problems that quantum computers can solve. For example, the complex mathematical problem that is the core of the design of RSA **encryption** and other public-key **encryption** schemes is factoring a product of two prime numbers.

## Why is a quantum computer faster?

But in a **quantum computer**, each qubit influences the other qubits around it, working together to arrive at a solution. Superposition and entanglement are what give **quantum computers** the ability to process so much more information so much **faster**.

## Why is quantum computing so powerful?

Right now, the best **quantum computers** have about 50 qubits. That's enough to make them incredibly **powerful**, because every qubit you add means an exponential increase in processing capacity. But they also have really high error rates, because of those problems with interference. They're **powerful**, but not reliable.

## What are the disadvantages of quantum computing?

The main **disadvantage** of **computing** is the technology required to implement a **quantum computer** is not available at present. The reason for this is the consistent electron is damaged as soon as it is affected by its environment and that electron is very much essential for the functioning of **quantum computers**.

## How long would it take a quantum computer to crack my password?

One study suggests that encryption using a 2048-bit key **could** be cracked in 8 hours using a **quantum computer**. While 128- and 256-bit encryption keys may be sufficient for now, the reason we don't often use longer keys is the amount of processing required on the devices doing the encryption and decryption.

## Is quantum computer faster than supercomputer?

This makes Google's **quantum computer** about 158 million times **faster than** the world's fastest **supercomputer**. The **quantum computer** uses the rules of **quantum** mechanics to perform calculations beyond human comprehension. **Quantum** mechanics is a branch of physics that deals with photons, electrons and atomic nuclei.

## Did Google achieve quantum supremacy?

In October 2019, **Google** scientists announced they'd **achieved** “**quantum supremacy**,” the long-sought proof that a computer built around the strange properties of **quantum** mechanics can, at least in certain cases, carry out calculations exponentially faster than a computer built around classical bits.

## Will quantum computers replace classical computers?

The short answer is no. **Classical computers** have unique qualities that **will** be hard for **quantum computers** to attain. The ability to store data, for example, is unique to **classical computers** since the memory of **quantum computers** only lasts a few hundred microseconds at most.

## Why do quantum computers need to be so cold?

Inside a **quantum computer** To work with these superconducting qubits for extended periods of time, they must be kept **very cold**. Any heat in the system can introduce error, which is why **quantum computers** operate at temperatures close to absolute zero, colder than the vacuum of space.

## What is a quantum computer made of?

In a **quantum computer**, the basic unit of memory is a **quantum** bit or qubit. Qubits are **made** using physical systems, such as the spin of an electron or the orientation of a photon. These systems can be in many different arrangements all at once, a property known as **quantum** superposition.

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