Quantum Computers Look Like Chandeliers. This is Why.

What is a quantum computer?

• A room-sized calculator.

• A smartphone that watches videos.

• A new type of computer based on quantum mechanics.

• A computer that uses only electrical currents.

What is the main difference between a regular bit and a qubit?

• A bit can be in a combination of two states at once, while a qubit cannot.

• A qubit can be in a combination of two states at once, while a bit is only 0 or 1.

• Bits are physical objects, but qubits are not.

• Qubits are only found in smart toasters.

Which of these is a quantum phenomenon that quantum computers use?

• Binary states.

• Electrical currents.

• Superposition.

• Microchips.

What is the biggest challenge in building quantum computers?

• Making them small enough to fit in a room.

• Finding enough silicon to build them.

• Decoherence, which makes quantum objects lose their quantum properties.

• Keeping them hot enough to function.

What is the actual part of a quantum computer that performs calculations?

• The large, tiered cooling device.

• The network of wires connecting the layers.

• A small, microchip-sized piece of silicon.

• The liquid helium used for cooling.

What is the main purpose of the large, chandelier-like structure seen with some quantum computers?

• To hold the quantum chip in place.

• To cool the quantum chip to extremely low temperatures.

• To display the complex wiring of the computer.

• To generate the quantum bits (qubits).

How does a dilution refrigerator cool the quantum computer?

• By using fans to blow cold air.

• By mixing and unmixing different types of liquid helium.

• By exposing the chip to a vacuum.

• By circulating water through cooling pipes.

What is a current challenge in developing quantum computers?

• Making them small enough to fit in a room.

• Preventing decoherence, which causes errors.

• Finding enough materials to build them.

• Making them warmer so they don't need special cooling.