# What does the CX gate do?

## What does the CX gate do?

The controlled-NOT gate, also known as the controlled-x (CX) gate, acts on a pair of qubits, with one acting as ‘control’ and the other as ‘target’. It performs a NOT on the target whenever the control is in state . If the control qubit is in a superposition, this gate creates entanglement.

**What is P gate?**

The P-Gate platform allows for scalability through self-organized overlay techniques and supports a full integration with centralized service nodes such as the IP Multimedia Subsystem (IMS) to provide functionality like authorization, accounting and bootstrapping.

**What does AZ gate do?**

The Z-gate is a unitary gate that acts on only one qubit. Specifically it maps 1 to -1 and leaves 0 unchanged. It does this by rotating around the Z axis of the qubit by π radians (180 degrees). By doing this it flips the phase of the qubit.

### What is universal gate?

A universal gate is a gate which can implement any Boolean function without need to use any other gate type. The NAND and NOR gates are universal gates. In practice, this is advantageous since NAND and NOR gates are economical and easier to fabricate and are the basic gates used in all IC digital logic families.

**What are the 3 types of logic gates?**

All digital systems can be constructed by only three basic logic gates. These basic gates are called the AND gate, the OR gate, and the NOT gate. Some textbooks also include the NAND gate, the NOR gate and the EOR gate as the members of the family of basic logic gates.

**What is Rx gate?**

The Rx gate is one of the Rotation operators. The Rx gate is a single-qubit rotation through angle θ (radians) around the x-axis.

## What is U3 gate?

Controlled-U3 gate is a 3-parameter two-qubit gate. This is a controlled version of the U3 gate (generic single qubit rotation). It is restricted to 3 parameters (i.e. θ, ϕ, λ). It can be applied to any qubit controlled on the opposite qubit. A CU3 gate controlled on q0 and q1 (Source: qiskit.circuit.library.CU3Gate)

**What is the H gate?**

Hadamard gate is also known as H gate, which is one of the most frequently used quantum gates, recorded as H ≡ 1 2 1 1 1 − 1 . Hadamard gate can be used to convert the qubit from clustering state to uniform superposed state.

**What is Pauli Y gate?**

The Pauli-Y gate is a single-qubit rotation through π radians around the y-axis. Y = σ y = σ 2 = ( 0 − i i 0 ) \ Y= \sigma_y = \sigma_2 = \begin{pmatrix} 0 & -i \ i & 0 \end{pmatrix} Y=σy=σ2=(0i−i0) Examples: 2. 1.

### What is RZ gate?

The Rz gate is one of the Rotation operators. The Rz gate is a single-qubit rotation through angle θ (radians) around the z-axis. R z ( θ ) = ( e − i θ 2 0 0 e i θ 2 ) \ R_z\left ( \theta \right ) = \begin{pmatrix} e^{-i \frac{\theta}{2}} & 0 \ 0 & e^{i \frac{\theta}{2}} \end{pmatrix} Rz(θ)=(e−i2θ00ei2θ)

**Why is NAND gate universal?**

The NAND gate is called a universal gate because combinations of it can be used to accomplish all the basic functions.

**What is bubbled gate?**

Bubbled OR gate: The OR gate with inverted inputs is called as Bubbled OR gate which is also called as negative OR gate. NAND gate is also called as an active low OR gate since its output becomes high even if any of the input is 0. NOR GATE: The NOR gate operates like an OR gate followed by an INVERTER.

## What is XOR and XNOR gate?

In the XOR gate operation, the output is only 1 when only one input is 1. The output is logical 0 when both inputs are the same, meaning they are either 1 or 0. But in the XNOR gate, the inverse is true.

**What is a CZ gate?**

The controlled-Z or cz gate is another well-used two-qubit gate. Just as the CNOT applies an X to its target qubit whenever its control is in state |1⟩ , the controlled-Z applies a Z in the same case.

**How does the N gate open?**

Near the end of depolarization, sodium channel inactivation gates close and potassium channel activation gates open, which is why we see a peak in the action potential. This means at the start of repolarization, the n-gates are open and the h-gates are closed.

### Why is NAND faster than NOR?

NAND is faster than NOR, because NMOSFET has less resistance than PMOSFET with same W/L ratio.

**What is De Morgan Theorem?**

De Morgan’s Theorem, T12, is a particularly powerful tool in digital design. The theorem explains that the complement of the product of all the terms is equal to the sum of the complement of each term. Likewise, the complement of the sum of all the terms is equal to the product of the complement of each term.